I wouldn't cut it or cold turkey but cut back slowly. Double check with your dr but you can possibly get withdrawal headaches from cold turkey
I don't think you'll withdrawal. I was on the same thing after I got knee surgery and I didn't have a hard time getting off of it, but everybody is different. If you stop now, your baby shouldn't have any withdrawals either. I don't know what side effects it has on baby though
I'm not sure about the other questions but it will not hurt your baby.