Cramping...i know its normal but what should be considered dangerous?

I had that. I actually got really scared that I was going into labor, but I just got up and went and sat on the toilet for a while. Eventually, I got some relief, and I also threw up from the pain of it. Ask your provider about stool softener. That helped me. And also, making sure I was drinking enough water...If you aren't that can also lead to constipation and the kind of pain you are talking about.