Miscarried 1/14/12 after an ectopic pg (after a 3 yr old tubal ligaton). Period started 2/1. Now 2/18, I woke up with terrible cramps across my csection scar and back aches. I have felt fine for the past 2 weeks, so these symptoms are all new. What can it be? Anything to do with the last pregnancy? My hgc dropped to under 20 before my period started. So we were confident the pregnancy was gone and no sac was ever found.