From my understanding, it is more common to have more practise contrax and earlier in the pregnancy after the first baby. Everyone's different, have to say that, too!
I was into maternity clothes, got practise contrax earlier and gained more weight with pregnancy after my first baby.
How exciting for you! I love babies.
Sometimes, excessive BHs can be a result of dehydration, just a thought, too, good to drink a lot of pure water!