Are extreme cramps normal?

Emily

I'm 6 weeks 3 days and I just woke up with horribly painful cramps. It was so bad I thought I was going to throw up or pass out or both! I started pouring sweat down my face and back and had to just lie on the floor for a bit. The pain and sweat went away after about 5 minutes. Should I go to the ER? Does this mean I lost the pregnancy?