Is it possible for me to do the hcg diet while on progesterone and testosterone?

Yes & no: hCG diet is not recommend by most physicians anymore so while you can do it, we don't advise it. You didn't mention your gender, but since you mention both Progesterone & Testosterone, I'm guessing that you're female. Regardless, you should address this w/your prescribing physician so that s/he knows everything that you're doing and can look for potential drug-drug interactions. Good luck!

Not recommended: Progesterone is thought to counter the effects of HCG (making it more difficult to curb appetite and lose weight). Also, if you are a male, HCG increases testosterone levels (you may be getting too much testosterone if you are taking it as an additional supplement).