At 15 weeks pregnant, your body will likely be showing signs of the pregnancy and you may notice an increase in libido!

How big is my baby?

Your fetus is now the size of an orange and be around 10cm in length, weighing in at 70 grams!


What’s my baby doing?

Your growing baby is starting to look more and more like a person with each week that passes. Their ears and eyes are moving, with their eyes becoming sensitive to light (although they are still closed). 

Your baby will be moving around a lot now, but you won’t be able to feel anything just yet. They will also be practising lots of the things they will need when they arrive into the world, such as taking breathes, suckling and swallowing fluid. 

It’s a great time to start talking to your baby this week. They can now hear noises externally and internally.

Changes in your body at 15 weeks pregnant


Lots of women complain of heartburn at the start of the 2nd-trimester. Try eating smaller meals more regularly if this is affecting you and remove spicy or greasy foods from your diet.


Nosebleeds can appear this week because your body is increasing its production and flow of blood. You may also notice that your gums bleed more than usual when brushing. Don’t panic, nosebleeds and swollen gums are quite normal. If you have any excessive bleeding then make sure you report it to your GP and midwife.

Increased sex drive

Your energy should return this week and you may notice an increase in your sex drive! Enjoy it while it lasts.

Pregnancy belly


You should start noticing some changes in your pregnancy belly this week.

The top of your uterus is now around 3-5 inches below your belly button and you might have gained between 4-5 pounds by week 15. This weight gain may start to show itself around your baby bump.

Don’t panic if you are below, or over, 4-5 pounds by week 15. Remember these are just averages.

Some mums start to feel baby’s movements as early as 14 weeks and others have to wait until 16 to 22.

Things to do this week

  • Try to keep the central heating to a minimum in your home (in the winter) and if you are working in an office don’t sit right under the air conditioning. This will help with any sinus issues you may be suffering from.
  • If you are at risk of pre-eclampsia, next week (week 16) is the time to check-in with your GP about it.
  • As your clothes start to become a little tighter now is a good time to start thinking about your pregnancy wardrobe. You don’t need to break the bank to create a fantastic maternity wardrobe.
  • After having lots and lots of amazing sex, many mums find it useful to channel the remainder of all that 2nd-trimester energy into something that productive, like decorating a nursery, learning a new skill, or experimenting with new healthy recipes.
  • You need to start thinking about your diet. Your body needs to increase its calorie intake by around 300 per day. You should look to load up on lean meats, low-fat dairy, whole grains, fruit and vegetables.
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