Hi autumnfall, I just went for my scan today and heard my baby heartbeat. I have constant abdominal cramp too. But gynae assure that if the cramp is by the side of the abdominal, it's fine. He claims that if it's abdominal cramp and you got spotting, then seek gynae immediately. I totally understand how you feel, always feel safer and happier after seeing the gynae and hearing him say your baby is healthy and normal.
By the way, I'm also having fluctuation in my energy level, one day I can be very active while the other day I can be totally shack. I guess it's normal since the baby grow from a peanut to a grape size from week 6-9. ^^
I also lost some weight since pregnancy, but gynae says its normal. Rem to drink more water or juices to replenish your water loss from diarrhea. ^^