Had anyone experience cramping and only like 4 weeks pregnant and I’m experiencing really bad belly and lower back cramping going to my legs but no bleeding or discharge at all. It only stay for like 10 min and it goes away on its on I don’t know if it has to do with not enough blood flow a nerve or it may be has anyone experience this and ended up having a healthy pregnancy ? I already experience 2 miscarriages this will be my 3rd pregnancy pleas help !!!!!