You need to do 0.5mg of anastrozole the day of your shot or the day after. That should correct your E2. Please ask your doctor first.
Just FYI if you are idiopathic hypgonadotropic hypogonadism as the doctor is suggesting, you may be able to come off T in 3 months and return to normal.
It happened to 10% in a clinical trial and none used HCG.
Hope this helps.