I'm 11w 5d saw a heartbeat at 6 weeks, haven't been to the doctor yet, but am going tomorrow. Today in the shower, while cleaning around up there, there was some dark brown blood. It seems to have stopped, and it was never enough to leave a mark in my underwear, but I'm still obviously worried. I haven't had intercourse in weeks (hubby is deployed). I'm worried though that it's the start of a miscarriage. Thoughts?