Second Trimester

The short answer

What changes

Weeks 14 to 27. Nausea usually eases, energy often returns for a stretch, and the physical problems begin. MedlinePlus's material on aches and pains in pregnancy and NHS guidance on back pain in pregnancy both describe what starts here: lower back pain, pelvic discomfort, round ligament pain, and the beginning of leg swelling.

It is also the trimester where your body visibly changes week to week, which is the argument for buying things that adjust rather than things that fit.

Sleep: the position question becomes real

Side sleeping is the usual recommendation from around this point, and if you are a habitual back or front sleeper that is a genuine adjustment rather than a preference.

This is the right trimester for a pregnancy pillow, and the honest advice is to buy something modular or compact first. A full-body U-shape is excellent and it occupies half a bed, and plenty of people discover a wedge plus a knee pillow does what they needed. See best pregnancy pillows, what size you need, and pillows for side sleepers.

Support: only if you have the symptom

A maternity support belt is for a problem, not a precaution. Once the bump has weight it pulls the pelvis forward and the lower back takes the strain — ACOG's material on back pain during pregnancy describes the mechanism.

If your back hurts, an under-belly belt that lifts is the thing to try. If your pain is pelvic rather than lumbar — at the front of the pubic bone, or across the back of the pelvis — that is a different belt entirely, and NHS guidance on pelvic pain in pregnancy and ACOG's material on pelvic support are both worth reading. See maternity support belts, belt vs pelvic belt, and when to start.

If you have no back or pelvic pain, do not buy one. Nothing about wearing a belt prevents pain arriving.

Clothes: buy now, not later

This is the trimester where the wardrobe decisions get made, for two reasons: you can finally judge a maternity size, and you get five months of wear rather than two.

The useful list is short — two pairs of maternity jeans or trousers, two pairs of leggings, three or four tops that work over a bump, and whatever your job requires. See best maternity jeans, jeans sizing, over-belly vs under-belly, and maternity work clothes.

Swelling: start before it is bad

Leg swelling and heaviness build through the second half of pregnancy, and NHS guidance on swelling in pregnancy describes the ordinary kind. Compression socks are the intervention that actually helps, and they work better started before swelling is severe than introduced once it is.

A wide-calf cut matters more than the brand, because calves change too. See compression socks guide and swollen feet relief.

Still too early for

• Nursing bras. Around 36 weeks is the usual advice, because sizing now is guesswork. See when to buy nursing bras.
• The postpartum kit. Third trimester. Right instinct, wrong month.
• A postpartum wrap. After birth, and your own team advises the timing after a caesarean.
• A breastfeeding pillow. Late third trimester is early enough.

How we scored these

Six axes: usefulness this trimester, usefulness at full term, comfort, adjustability as you grow, discretion and value. Adjustability is weighted high here specifically, because in a trimester where your measurements change weekly, a garment that fits perfectly today is worth less than one that keeps fitting.

We read the current listings and the reported experience; we have not used these. The method is on how we pick.

When to contact your provider

• Sudden or severe swelling of the face, hands or feet, or a severe headache, or visual changes — these can indicate preeclampsia and need assessing urgently
• Vaginal bleeding, or fluid leaking
• Severe or persistent abdominal pain, or regular tightening
• A noticeable reduction in your baby's movements once you are feeling them
• Severe one-sided calf pain, warmth or swelling, or chest pain or breathlessness
• Fever, or pain on passing urine
• Back or pelvic pain that stops you walking or sleeping
• Persistent low mood or anxiety