WEEK 15: Developing a sense of smell
Your baby’s sense of smell will have started to develop this week. Your hormones might have decided to have a tantrum though – find out about these ebbs and flows.

15 weeks pregnant: Pregnancy tips and nutrition

At a glance

You could be feeling blue or full of energy – both scenarios are normal

Speak to your doctor or midwife if you’re not feeling like your usual self


Try fibre-rich foods and water to relieve any constipation

Sex is fine to enjoy and safe for you and your baby – if you’re feeling in the mood

The thorax, or chest, will start to rise and fall. They are irregular movements for the moment, but it means that your little one is starting to inhale.

Baby's development at 15 weeks

Everything is falling into place for your baby’s sense of smell this week. The thorax, or chest, will start to rise and fall. They are irregular movements for the moment, but it means that your little one is starting to inhale.

The development of this mechanism means the olfactory system can start to ‘smell’, driven by the aromatic molecules in the amniotic fluid. But baby won’t really perceive odours properly until the seventh month, when the nervous system is more mature.

Your body

Baby should be making an appearance in about 24 weeks! You might be feeling wonderful, thrilled to be pregnant and full of energy. Or you might be feeling a bit overwhelmed, like your body is not your own. Guess what? Both scenarios are totally normal. If you’re feeling a bit blue, talk to your GP and antenatal group about it. They’ll be able to offer advice on feelings and emotions during pregnancy, as well as solutions to help you feel more yourself.

Future parents holding bump at 15 weeks of pregnancy


Constipation is caused by the hormone progesterone slowing the passage of digested food through the intestines. It’s completely normal, but not very nice. Don’t worry though, there are things you can do to relieve it. Such as drinking plenty of water. Also, try to include foods that are rich in fibre in your pregnancy diet, such as fresh fruits and vegetables, whole-grain breads and cereals (and grains themselves), as well as dried peas and beans. If the problem persists, try to include a small bowl of bran cereal in your breakfast every day. If you continue to feel uncomfortable, we suggest you speak to your GP as there are gentle medicines that can be prescribed to help.

Pregnancy tips

Sex during pregnancy? It’s completely fine from a medical point of view. Baby won’t be harmed or traumatised in any way. It just depends on how you’re feeling.

Some women are so preoccupied with their pregnancy that they aren’t really in the mood. Hormonal changes can have an effect on the female sexual organs too.

However, many couples experience pregnancy as a sexually intense time, and there’s no reason not to enjoy it. Plus, you can forget about contraception as you definitely can’t get pregnant again!

Check out this guide on having sex while pregnant

14 weeks pregnant: Pregnancy tips and nutrition

prev Previous article

16 weeks pregnant: Pregnancy tips and nutrition

Next article next

Important advice to mothers

The World Health Organisation (WHO) recommends exclusive breastfeeding for the first 6 months of life. SMA® Nutrition fully supports this and continued breastfeeding, along with the introduction of complementary foods as advised by your healthcare professional.


Sign up or log in

Not registered ? You can join us now


If you registered with the previous smamums website you will need to reset your password. You can then benefit from the upgraded functionalities and personalised profile.