What’s happening with your baby?
Trimester 1 (0 – 12 weeks):
Massive hormonal increases and changes mean fatigue, tender breasts, nausea, mood swings, constipation, more frequent urination, headaches, and heartburn. You might need to make lifestyle changes like going to bed earlier or eating frequent small meals.
By the end of your first trimester, your baby is about 8cm long and its organs have formed – you will be able to find out its sex in an ultrasound.
Trimester 2 (13 – 28 weeks):
Most women find this trimester easier than the first, but of course every pregnancy is unique. While nausea and fatigue should be better, you may now experience back ache, stretch marks, patches of darker skin on your face, numb or tingling hands, and itching or swelling.
By the end of your second trimester, your baby has taste buds, foot and fingerprints, hair, and lungs (though they have yet to work). He or she is now about 30cm long and weighs about 680g.
Trimester 3 (29 to 40 weeks):
With baby getting bigger and putting more pressure on your organs, you may find breathing difficult and have to urinate even more often. Some new body changes may include haemorrhoids, leaking a pre-milk called colostrum, your belly button sticking out, having trouble sleeping, and contractions.
By the end of 37 weeks, your baby is considered full term, with organs that are ready to function on their own. He or she will have turned upside down in preparation for birth, and weigh between 2.5 and 4kg.