Subscribe to our newsletter
15 weeks pregnant, or 13 weeks after conception: a growth spurt

During the second trimester, the organs continue to develop. Your baby inhales and exhales the amniotic fluid, helping their respiratory system to mature. The heart is fully functional, pumping around 24 litres of blood per day and beating at around 140 beats per minute.
Related articles

Pregnancy week by week
29 weeks pregnant, or 27 weeks after conception: a stretching baby

Pregnancy week by week
28 weeks pregnant, or 26 weeks after conception: the end of the second trimester

Pregnancy week by week
27 weeks pregnant, or 25 weeks after conception: is your baby dreaming?

Pregnancy week by week
26 weeks pregnant, or 24 weeks after conception: surfactant production

Pregnancy week by week
25 weeks pregnant, or 23 weeks after conception: a toned baby

Pregnancy week by week
24 weeks pregnant, or 22 weeks after conception: slight hair growth