These results are on week 7 of a 12 week 500mg/week test only cycle. I'm running the "My first cycle" thread with no AI. I'm curious if I should add an AI because of my Estradiol, Ultrasensitive number. Off cycle I'm usually really tired (with test at 509 on the attachments). Now I feel less tired, but not super energetic, but I don't have any symptoms. So If I'm going off feeling only then I guess I'd leave it alone and continue as is. Any thoughts? I'm 42 and this is my fourth time doing this cycle, once each of the last 3 summers and another a few years prior. This is also my first time doing bloodwork.