The first trimester covers the first three months, from conception to the 13th week. During this time, Mum’s body needs to make significant adjustments to accommodate the pregnancy as the baby goes from a simple ball of cells to having all essential organs and structures. Things to do after (and before) you get pregnant Stop smoking and...
The second trimester starts in week 13 and ends in week 26, and it’s a time of rapid growth for the baby. All the major structures and organs were organised in the first trimester, progesterone production has shifted from the corpus luteum to the placenta, and building on these foundations is now the primary aim. The baby’s brain c...
The third trimester starts in week 27 and usually ends at week 40. The baby becomes increasingly prepared for birth as it grows throughout the trimester, and delicate organs like the lungs mature and become more functional. Most babies start to turn head-down from about the 28th week in preparation for their birth. Babies can put on up to ½lb...
