This just started yesterday and it is driving me nuts because I dont know whats going on. My belly button is killing me,it hurts to the touch(lower part of belly button). I have an "innie" and my tummy is getting pretty big and my belly button has kinda become flat. I know it can become an "outie",but this hasnt happen in a previous pregnancy either. Anyone know what this pain is? Is it my belly button reversing that is causing the pain, I just dont get it. Any advice?