13 Weeks Pregnant, Welcome to the 2nd Trimester!

Due dates are only an estimate. Statistically, 96% are incorrect. If you are currently 13 weeks pregnant then you are due in approximatley 27 weeks or 186 days. Due dates are calculated on 40 weeks of pregnancy but your baby might be born anytime between 37 and 42 weeks of pregnancy. 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.

Your body is gearing up for the next phase of pregnancy, adapting in ways that are fascinating, occasionally surprising, and sometimes a little inconvenient. With your uterus shifting upwards, you might catch the first glimpse of a bump. Here’s what might be going on for you right now:

• Fading nausea (we hope). For many, week 13 marks the beginning of the end for morning sickness. If it’s still persisting, know that relief is (probably) on the way. Keep those ginger biscuits close, just in case.
• Fresh energy. The dragging fatigue of the first trimester might finally ease, leaving you feeling a bit more human. Use this boost wisely, however you see fit – whether that’s preparing for the months ahead or just binge-watching your favourite shows without dozing off.
• Renewed appetite. If food was your enemy last month, you might find yourself ravenous now. It’s your body’s way of saying, “Hey, we’ve got some serious growing to do!” Listen to it, and don’t feel guilty about the odd craving or carb fest.
• Surprising sensitivities. Tender gums or even the occasional nosebleed can crop up thanks to hormonal shifts and increased blood flow. It’s strange but normal – just brush gently and keep tissues handy.
• Bigger boobs. They’re preparing for breastfeeding, even if you have no plans to breastfeed, which means they might be particularly tender at the moment.
• Mood swings. Your hormones are working hard – and so are you – so be patient with yourself. Your body knows what it’s doing, even if it sometimes feels like it’s playing tricks on you.

It’s no secret that pregnancy hormones can bring about ups and downs, but they also come with some surprising benefits. Many women notice their hair becoming thicker and shinier during their second trimester, as pregnancy boosts hair growth and slows down shedding. Meanwhile, your skin might get a “pregnancy glow” thanks to increased blood flow and higher oil production.

Less well-known is the effect these hormones have on your brain. While “pregnancy brain” (that foggy, forgetful feeling) is often joked about, research suggests your brain is actually rewiring to help you connect deeply with your baby. This shift in focus may feel strange, but it’s part of your body preparing for the demands of motherhood. And don’t worry – your sharpness returns postpartum!

You’re feeding for two now – but it’s less about eating more, and more about eating wisely. Here’s how to keep things balanced and interesting:

With your energy making a comeback, this trimester is perfect for exploring movement that feels comfortable for your evolving body:

• Rediscover simple joys. A brisk walk outdoors can do wonders – some fresh air and a stretch of the legs benefits both your mind and your body.
• Make a splash. Swimming or aqua aerobics can give you that weightless, floaty feeling – a nice contrast to any bloating you might be experiencing.
• Stretch it out. Antenatal yoga not only stretches tight spots but also builds strength and balance to support your changing posture.
• Break the “sitting spell”: Even if you’re desk-bound, set a timer to stretch your hips or do gentle neck rolls. Movement matters, no matter how small.

Your second trimester is the perfect time to start thinking about what you want the rest of your pregnancy to look like. It’s worth doing some planning at this stage, whether that means researching antenatal classes, looking into your maternity leave options, or even treating yourself to some comfy, stretchy leggings for all the growing you’ll be doing.

And if you haven’t already, now is a good moment to start pondering your birth options. Consider whether a hospital, a birth centre, or even a home birth would be most comfortable for your situation. Your midwife or GP will be happy to chat through what’s available in your area.

As you step into week 13, take a moment to appreciate everything your body has accomplished so far. Your baby is growing and changing in remarkable ways, and so are you. Whether you’re feeling energised or still adjusting, it’s all part of the process, and there’s no “right” way to experience it. This week is another step in your journey to motherhood, and it’s unfolding exactly as it should.

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!