So I was in the hospital on the 27th of last month due to some bleeding. They said I'm still early in on my pregnancy so nothing showed on the ultrasound. They said my hcg level was a 18 so they said we are at a 50/50 right now. They want to retest me on the 2nd and they said if my hcg level is at 0 then I miscarried, if it has doubled in number than my body is doing implantation bleeding. Has anyone else had this experience before? Please need advice!