Today I've had dull cramps on and off. They feel low, similar to VERY light period cramps. Sometimes they come in a sharper, more painful cramp. They are pretty light, I don't really feel my stomach hardening with them. I also woke up EXHAUSTED and achey, as if I ran a marathon yesterday. Is this normal? Or a sign to call my DR? I'm relaxing and keeping hydrated, is that all they'll tell me to do?