Always been low, from 3-9. I hit 3 when I was told by a bro to take a AI if your taking test, that's before I went to see a pro. Also at 3 my knees killed me, I could not have sex, I had dry skin and felt like shit. From me I can do 100 test or 1000 a week and still have low E2 but HCG will bring it up. I do 100 a day per Crisler when I used to see him. I also take 3g copper and 50g zinc like Mike posted so not sure if I am fighting myself
For the past year my E2 has been 20-24 each time I do blood work, Also for me HCG does not bring my test level up.