So I have been feeling a lot of different things with this pregnancy, I'm currently 4 weeks. But today I got period type cramps and it felt like everything inside me was going to come gushing out. I thought for sure I was going to miscarry. Well I laid down and put my feet up for several hours and then I felt completely fine. Is this normal? Or does that just mean I need to take it easy. (I did a decent amount of walking before this all happened). Any advice would be helpful!