I would go to my OBGYN and have them do a blood test. Not all hcg will cause a positive pregnancy result. Here is a quote I found off another thread:
Rx hcg...yes. If you wet a pregnancy test and put the Rx on it....it will give you a positive. Homeopathic...if you put it on a pregnancy test....negative. The solution is super super weak.
I'm thinking you've got the real stuff being made by your own self truly. One way to check for sure is quit the hhcg....after 24 hours the hhcg is out of your system. Retest.