The fourth trimester is just as important as the first three – if not more

I thought I knew all about trimesters after being pregnant with my first son, Theo. 

There was the first one, where I felt queasy – a feeling that would only go away with the sugary sweetness of a Pret bar (I should have bought shares, the amount I ended up buying) – and worried that the pregnancy test had been faulty and that I…