- Pregnancy Week by Weeks
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Something is different this week.
Not dramatically, not overnight but if you pay attention, you will notice it. The nausea that has been your companion since week six has either gone completely or reduced to something manageable. The exhaustion that made the first trimester feel like moving through water has lifted enough that you got through a full day this week without needing to lie down. Appetite is back, genuinely back, not the cautious, tentative return of week thirteen but something that resembles actual hunger at actual mealtimes.
And the bump. This week, for most women, the bump stops being something only you can see and becomes something the world can see too. Not large yet, nothing like what weeks thirty and beyond will bring, but present. Real. Visible from across a room to anyone who knows to look. The pregnancy that you carried privately through the first trimester is now announcing itself without your permission, and there is something both wonderful and slightly startling about that.
This is the second trimester finding its pace. This is the week most women describe as the first week they felt like they were actually enjoying being pregnant rather than simply enduring it.
And this week, for many women, is also the week the first unmistakable movement arrives.
Your baby at 16 weeks: avocado-sized and increasingly aware
Your baby measures approximately 18.6 centimetres from head to bottom and weighs around 146 grams this week, the size of an avocado, which feels both impossibly small and somehow plausible given what you can see of your own body.
Baby can hear. Not with the clarity they will have after birth, but the auditory system is now functional enough that sound reaches them, filtered through amniotic fluid and the layers of tissue between them and the outside world, but present. Your voice is the most consistent sound in their experience, and research shows that newborns recognise their mother’s voice at birth with a specificity that suggests familiarity built across months of listening. Baby has been hearing you since before week sixteen, but this is the week the hearing is developed enough that what baby hears is genuinely processed rather than simply received.
Baby’s eyes are still closed, the eyelids remain fused until around week twenty-six, but they can detect light. A bright light directed at your abdomen will cause baby to move away from it, a response that demonstrates the visual system is already engaged with the external world in a rudimentary way.
Baby’s skeleton continues hardening as calcium progressively converts the cartilage framework into bone. Baby’s movements are more coordinated than they were even a few weeks ago, baby can stretch, bend their limbs, turn their head, and make facial expressions. Those facial expressions are not emotional in the adult sense, but the muscle patterns that will eventually produce their smile, their frown, their particular way of looking at something that interests them, are being practised right now, in private, for months before you ever see them.
The placenta is fully mature and functioning efficiently. It is now producing the progesterone that was previously produced by the corpus luteum, and this hormonal transition is one of the reasons most women feel meaningfully better from around weeks thirteen to sixteen. The acute first-trimester hormonal surge is stabilising, and the relative hormonal equilibrium of the mid-second trimester is a significant part of why this period is generally easier.
Movement: the question you are probably asking yourself several times a day
If you have not yet felt your baby move clearly, week sixteen is the week most women begin paying close attention to the internal landscape.
First fetal movements, quickening, are typically felt somewhere between weeks sixteen and twenty-two for first-time mothers. Some women feel the first unmistakable movement this week. Others will not feel anything clear until weeks eighteen, twenty, or even slightly beyond, particularly if the placenta is positioned at the front of the uterus (anterior placenta) where it acts as a cushion between the baby and the abdominal wall.
What it feels like at sixteen weeks is genuinely difficult to describe in a way that prepares you for it. Women use words like flutters, bubbles, a light tapping, a fish swimming, a tiny pressure from inside that has no external cause. At this early stage it is subtle enough to be easily missed, easy to mistake for digestive movement, easy to second-guess in the seconds after it happens. Many women describe knowing it was their baby but not being completely certain, which is exactly the right level of certainty for week sixteen.
Some practical notes: movement is most often felt when you are still and quiet, lying down in the evening, sitting without distraction. The Mauritius heat and the activity of a normal day can mask the subtle early movements. If you want to try to feel something, lie on your left side after a meal and pay attention. Do not put your hand on your abdomen, the pressure can actually reduce what you feel. Simply be still and present.
If you feel nothing at sixteen weeks, this is not a warning sign. It does not indicate anything is wrong. It almost certainly means your placenta is positioned in a way that is buffering the movements, or simply that your baby is in a quieter phase or a position where their movements are not reaching the abdominal wall. Clear, consistent movement becomes expected closer to twenty to twenty-two weeks for first-time mothers. Before that, anything you feel is a gift, and the absence of it is not concerning.
Your body at sixteen weeks: the second trimester in full
The physical experience of sixteen weeks is qualitatively different from the first trimester, and for most women the difference is welcome enough to be worth marking.
Energy that has been absent since early in the first trimester is returning. Not the pre-pregnancy energy you had before any of this started, pregnancy continues to make additional demands on your body throughout the second trimester, but something recognisable, something that allows you to get through a day and have something left at the end of it. Many women at sixteen weeks describe feeling more like themselves than they have since the positive test, which is both a relief and occasionally a slightly strange feeling after months of the first trimester’s particular intensity.
The bump is now visible to others and this changes the social experience of the pregnancy. People who know are more openly engaged with it. Strangers may begin noticing. Family members who have been waiting for the announcement have their questions answered visually. The physical reality of the pregnancy becomes a subject of conversation in a way it was not when it was entirely internal.
Alongside the welcome changes, the second trimester brings its own physical contributions. Round ligament pain, the sudden, sharp, one-sided pulling sensation in the lower abdomen that arrives when you move quickly, sneeze, or change position, is common from the second trimester onward as the ligaments supporting your growing uterus stretch to accommodate it. It lasts seconds rather than minutes and resolves when you slow down. It is harmless, very common, and consistently alarming the first time it arrives regardless of how clearly you were warned.
Heartburn and indigestion typically intensify through the second trimester rather than improving, as the growing uterus creates more pressure on the stomach and progesterone continues relaxing the oesophageal valve. Smaller meals more frequently, eating slowly, and staying upright for an hour after eating are the most consistently effective management approaches. Safe antacids are available at Mauritius pharmacies, ask your gynaecologist which formulations are appropriate during pregnancy.
Nasal congestion is a symptom many women at sixteen weeks are surprised to find listed in pregnancy guides, because its relationship to pregnancy is not intuitive. Increased blood volume causes the mucous membranes throughout the body, including those in the nasal passages to swell and produce more mucus, resulting in a blocked or runny nose that has nothing to do with a cold and does not respond to decongestants. Saline nasal spray is safe and often helpful. The congestion typically persists through the pregnancy and resolves after birth.
Skin changes may be becoming more noticeable. The linea nigra, the dark vertical line running down the centre of the abdomen from navel to pubic bone, appears in many pregnancies in the second trimester and is driven by the same increase in melanin production that causes melasma. Both are more common and often more pronounced in darker skin tones, which means they are frequently experienced by Mauritius women and often more visible in the Mauritius sun. Daily SPF on exposed skin is the most effective preventive measure for melasma specifically.
Early Pregnancy Symptoms: What Is Normal, What Helps, and When to Call Your Doctor
Nutrition at sixteen weeks: rebuilding properly and eating with intention
The returning appetite of the second trimester is an invitation to approach nutrition more deliberately than the first trimester allowed. The nausea that narrowed your choices for weeks is largely gone. The food aversions that made iron-rich foods impossible may be resolving. This is the window to rebuild the nutritional habits that will carry you and your baby through the second and third trimesters.
Iron remains the most critical nutritional priority. Your blood volume is increasing by approximately 50 percent across the pregnancy, and iron demand increases accordingly. The plant-based iron that dominates a Mauritius diet, lentils, dhal, dark brèdes, chickpeas, fortified cereals, absorbs significantly better when eaten alongside vitamin C. This combination is worth making habitual rather than occasional: the squeeze of lime on the dhal, the tomato in the lentil soup, the papaye alongside the egg. Small and consistent rather than dramatic and occasional.
Calcium is actively required for your baby’s bone development, which is progressing rapidly at sixteen weeks. Milk, yoghurt, cheese, and calcium-set tofu are the most accessible sources in a typical Mauritius diet. A glass of milk with a meal, a bowl of plain yoghurt, a small piece of cheese, daily, rather than occasionally. Your body will take calcium from your own bones to give to your baby if your diet does not provide enough, which is a process worth preventing proactively rather than managing retrospectively.
Omega-3 fatty acids continue to support your baby’s rapidly developing brain and nervous system. The oily fish available in Mauritius, fresh tuna consumed in moderation due to mercury content, sardines which require no preparation from the tin, fresh local fish from the market, are your best sources. If fish remains unappealing, ground flaxseed stirred into yoghurt, chia seeds soaked in coconut water, and walnuts provide plant-based alternatives.
Protein at every meal: eggs, fish, chicken, lentils, beans, yoghurt, nuts. Your baby’s tissues, organs, and the placenta itself are built from protein. It does not need to be elaborate, eggs on toast, a bowl of dhal with rice, yoghurt with fruit, but it needs to be consistently present.
Hydration in the Mauritius heat: more than you think you need, consistently across the day rather than in large amounts at once. If the heat is making plain water unappealing, cold water with lime, fresh coconut water, and the fluid content of soups and fruits all contribute to total intake.
What to do this week in Mauritius
Book the anatomy scan if you have not already done so. The morphology ultrasound is performed between weeks twenty and twenty-two in Mauritius, and popular imaging centres have waiting times of two to three weeks. At sixteen weeks you have approximately four weeks before the window opens, calling now ensures you get an appointment within it rather than scrambling in week nineteen.
Attend your next scheduled antenatal appointment. Around sixteen weeks, your gynaecologist will typically review your blood test results from the first trimester, check your blood pressure and weight, listen to the fetal heartbeat with a Doppler, and discuss the anatomy scan and any outstanding questions. If your iron levels were borderline at the first trimester blood tests, supplementation may be discussed at this appointment.
Continue your prenatal vitamins without interruption. The second trimester is not a reason to stop. Folic acid, iron, and the range of nutrients in your prenatal supplement continue to be relevant throughout the pregnancy regardless of trimester.
Begin thinking about the third trimester, which is closer than it feels. The gestational diabetes test is performed between weeks twenty-four and twenty-eight in Mauritius. Given the island’s high rates of type 2 diabetes and metabolic syndrome, this test matters more here than in many other countries and is worth planning for rather than discovering at the last moment.
The second trimester continues to establish itself. The bump grows. Movement, if not yet felt, is approaching rapidly, most first-time mothers have felt something unmistakable by weeks eighteen to twenty. The anatomy scan is drawing closer. The second trimester, which most women look back on as the period of the pregnancy they enjoyed most, is fully underway.