11 Weeks Pregnant: Things to Avoid

At 11 weeks pregnant, your baby is still completing the most sensitive stage of development, which means this is a good week to double-check the everyday habits, foods and activities that are worth avoiding or adjusting. Most of the precautions below aren't about rare dangers — they're standard NHS advice designed to reduce small, avoidable risks while your baby's organs and systems finish forming. Here's a clear, practical rundown of what to steer clear of at 11 weeks and why.

Foods and drinks to avoid

Food safety guidance is largely unchanged from earlier weeks, but it's worth reviewing again as nausea eases and appetite starts to return for many women.

Unpasteurised dairy and soft mould-ripened cheeses (such as brie, camembert, and soft blue cheeses) — these can carry listeria, which is rare but more dangerous in pregnancy.
Raw or undercooked meat, pâté, and cured meats unless cooked through, due to the risk of toxoplasmosis and other bacteria.
Raw or partially cooked eggs that aren't produced under the British Lion Code of Practice.
High-mercury fish like shark, swordfish, and marlin — limit tuna too, as advised by the NHS.
Alcohol — there's no known safe amount in pregnancy, so the NHS recommends avoiding it completely.
Excess caffeine — keep total intake (coffee, tea, cola, energy drinks, chocolate) under 200mg a day.

Lifestyle and environmental factors

Beyond diet, a few everyday habits and exposures are worth avoiding or limiting at this stage.

Smoking and vaping — both are linked to complications and are best stopped as early as possible; ask your midwife or GP about NHS stop-smoking support.
Hot tubs, saunas, and very hot baths, which can raise your core body temperature more than is recommended in early pregnancy.
Contact sports and activities with a high fall risk, such as horse riding, skiing, or rugby.
Heavy lifting or straining, which can put unnecessary strain on your back and pelvis.
X-rays and unnecessary radiation exposure — always tell any healthcare professional you're pregnant before a scan or treatment.
Cleaning cat litter trays yourself where possible, due to the small risk of toxoplasmosis; if you must, wear gloves and wash your hands thoroughly afterwards.

Medications and supplements to check

Not every medicine that's fine for the general population is recommended in pregnancy, so it's worth pausing before taking anything new.

Always check with your GP, midwife, or pharmacist before taking any over-the-counter medication, including common painkillers other than paracetamol.
Avoid high-dose vitamin A supplements and liver products, as excess vitamin A is linked to birth defects.
Continue your 400mcg folic acid supplement daily until at least week 12, and take 10mcg of vitamin D throughout pregnancy.
Some herbal remedies and essential oils aren't well tested in pregnancy — it's safest to check before using them.
If you take regular prescribed medication for an existing condition, don't stop it without medical advice — speak to your GP about pregnancy-safe options first.

When to speak to your midwife or GP

Most 11-week symptoms are ordinary early pregnancy niggles, but contact your midwife or GP promptly if you notice heavy bleeding, severe abdominal pain, a high fever, or you're unable to keep any fluids down. If you're ever unsure whether something is safe, it's always better to ask than to guess.

Frequently Asked Questions

Can I dye my hair at 11 weeks pregnant?

Most current evidence suggests hair dye is safe to use during pregnancy, as very little is absorbed through the skin. That said, some women prefer to wait until after the first trimester as an extra precaution. If you do dye your hair, do it in a well-ventilated space and follow the product instructions carefully.

Is it safe to use my usual skincare at 11 weeks?

Most everyday skincare products are fine to continue using in pregnancy, but a few ingredients are best avoided or swapped out, including retinoids (retinol, tretinoin) and high-strength salicylic acid. Check product labels or ask your pharmacist if you're using prescription-strength skincare, particularly anything containing vitamin A derivatives.

What if I've already been exposed to something on this list before finding out I was pregnant?

Try not to worry — many women are exposed to something on this list, such as a glass of wine or a hot bath, before they realise they're pregnant, and this rarely causes harm. Mention it to your midwife at your booking appointment so they can offer reassurance or further advice tailored to your situation, and simply follow the guidance going forward.

This article is for informational purposes only and does not constitute medical advice. Always consult your midwife or GP for advice specific to your pregnancy.

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