Rough housing and "Playful Hitting" (your words) is not a good idea you are sending mixed messages so that should stop, reading your post it sounds as if you have been a part of the behavior, so sit down with him tell him your concerns and adjust your own behavior, you could also ,both of you ,get some counseling before the Baby is born it is not a good enviroment for a child,it sounds as if with some work on both sides that is may be fixable ,tell him this kind of behavior is not permittable ,but also take responsibility for your part Good Luck
Noone is worh putting up with abuse, if you do not get out now soon you may not be able to, you know they do kill get out while you can there are places out there pick up the phone and ask for the hot line luck jo
Whats more important the love that you have this abusive husband you have or the sake of your unborn child.Please do your unborn child and yourself a favor and leave.Its not worth it,They may say that will stop but what happens from a month or longer from now he starts up with the abuse all over again?Stay there and take it and let him do it again to you and hurt your unborn child.GOD I HOPE NOT.There are plenty of shelters out there for woman in your kind of predicament and your local police will help you.GOOD LUCK!.