A Guide to Being 15 Weeks Pregnant

Due dates are only an estimate. Statistically, 96% are incorrect. If you are currently 15 weeks pregnant, then you are due in approximately 25 weeks or 172 days. Due dates are calculated at 40 weeks of pregnancy, but your baby might be born between 37 and 42 weeks. Some are born earlier and some later. Put simply, labour happens when your body and baby are ready!

Use our pregnancy calculator to work out when you might be due.

As your uterus continues to grow, your bump slowly starts to take shape, a subtle but exciting sign that your pregnancy is in full swing. This is a special stage where you start to look pregnant, not just feel it! Here are some changes you might notice as your body works tirelessly to support your growing baby:

• Skin surprises. Hormones are working their magic – and mischief. You might notice darker areolas, a faint line down your belly (known as the linea nigra), or even the first traces of stretch marks.
• Breast changes. Your breasts are busy getting ready for breastfeeding, which means they may be feeling heavier than usual. They might also start producing colostrum – the nutrient-packed pre-milk designed to nourish your baby in their first few days.
• First flutters. While it’s still early, your baby is becoming more active, and some women report feeling their baby’s first tiny movements around this time, especially after meals or when resting. However, it’s equally normal not to feel them yet.

Getting comfortable at night may be feeling tricky, especially as your bump grows. Here are some ways to increase your chances of securing some much-needed rest:

• Lie on your side. It’s recommended to sleep on your side, ideally your left side, during pregnancy – especially in the 3rd trimester. This position promotes better blood flow to your baby and reduces pressure on vital organs, like your liver and kidneys.
• Pillow power. A pregnancy pillow or extra cushions can make a big difference to the quality of your sleep by providing support to your growing bump, back, and hips, helping to alleviate discomfort during the night.
• Peaceful rituals. A relaxing nighttime routine can signal your body that it’s time to rest. You could consider incorporating some gentle activities such as reading, gentle stretching, or drinking caffeine-free herbal tea. Also, aim to keep your bedroom cool and dark to encourage better sleep.

This week, you may notice some changes in your knickers or bra. These are often completely normal and are part of your body’s adaptations to pregnancy:

Your body’s hard at work this week, and you might notice a few quirky side effects along the way. Here’s what’s common around this stage:

• Round ligament pain. As your uterus grows, you may experience sharp twinges or a pulling sensation on your lower abdomen or sides. These little discomforts are natural as your body stretches to make room for your growing baby.
• Nasal congestion. Thanks to those pregnancy hormones, your nasal passages might swell, leading to stuffiness or the occasional nosebleed. It’s all part of the process, but you can ease discomfort with a saline spray or a humidifier.
• Tummy troubles. Heartburn and constipation may still be lurking right now. Keep fibre-rich foods and lots of water on hand to minimise any digestive discomfort.

The second trimester is often when pregnancy feels most manageable, so it’s a great time to focus on staying healthy and preparing for the months ahead:

• Move in ways that feel comfortable. Low-impact exercises, like swimming or antenatal yoga, can relieve tension and lift your spirits, helping you to feel your best.
• Nourish wisely. Support your baby’s development with a balanced diet full of protein, calcium, and whole grains, and remember to drink plenty of water to stay hydrated.
• Ask away! Don’t be afraid to make a list of questions ahead of your next antenatal check-up – it’s the perfect opportunity to get expert guidance from your midwife and find clarity on any concerns you might have.

At 15 weeks, you’re well and truly in the thick of pregnancy. Every shift and change, whether subtle or noticeable, expected or surprising, moves you closer and closer to motherhood. Keep trusting your body’s ability to grow your baby, embrace the unique experiences of this stage, and remember: pregnancy is different for everyone. You’re doing great!

Be sure to check out the Butterbean knowledge hub for your week by week guide to pregnancy plus lots more from birth to babe in arms. Did you know we also have courses? Check out our multi award-winning hypnobirthing and pregnancy yoga courses today!