I Took The HcG Diet Drops On And Off For

I took the HcG diet drops on and off for a few years, and I know they have caused hormonal imbalance, changed my body shape, and crushed my metabolism... I am now eating clean with a dietician, and have been for four months, but I am at my heaviest weight ever! I was originally fooled into taking the drops because a trainer said they would 'reset' my metabolism. We stopped working together, and the weight came back despite no sugar, flour, and the workout routine of a world class athlete and boxer that I miraculously maintained on so few calories. My blood tests have been reported as normal, but I know that I have been starving for years- even if I never got clinically diagnosed anorexic due to extremely low weight (I feel the drops kept me from getting too low)
What tests should I have done, and what damage could have been done? I'm scared to death that this is permanent weight gain, as the typical weight loss formula seems to tell my body to gain. I hear HcG acts as a neurotransmitter, what can I do to get my body back!? I am depressed beyond recognition.