Help..

So I'm 31 weeks pregnant almost 32 weeks. When I was a lil kid I always had a problem with hitting/slamming my head when I got frustrated.. And I still do the same thing.. I'm worried about delivery.. And I was wondering if anything could happen when I do deliver my son. I'm still scared over this.. I always had to take pills to help me but since I'm pregnant I had to stop the pills because it could harm him. Please no negative.