Hi there, I'm nearly 34 weeks and had been wondering the same thing. I had a chat to the midwife on wednesday and I found out that not all BH are the same and that my 'period pain like' feelings and the painless tightening of my tummy that I only notice when I rub it are all counted as BH. I am started to realise that nothing in pregnancy is what it seems and as long as bubs is moving then things are fine. Good Luck!