I've had it both pregnancies, and it was different both times. #2 was more full on... I was on more drips and at hospital more often. BUT it did calm down for the last 6ish week which was a absolute god send.
With #1, it wasn't quite as severe, but it didn't calm down until after giving birth. AT least with #2, in the last 6 weeks there were days where I wasn't sick ALL day.

Good luck!!