How old are you? Did your doc test your LH, FSH, and Estradiol?
I had low testosterone all through puberty up until 20 years old. Was put on Androgel for 8 months, found another doc that told me to get off before I become infertile, then she put me on clomid. She put me on 50mg clomid daily.... So much for trusting your doctor; that's a huge dosage. Made me feel like complete ass for the 3 weeks I beared through it. I had the shakes and shivers, very feverish feeling, and it absolutely destroyed my energy for exercising while on it. Could only make it 25 meters in the pool before I was pooped when I normally swim over a mile a day. It also gave me permanent eye floaters (likely due to the unnecessarily high dosage; most men do 12.5 or 25mg).
Anyways, it did raise my T to 825 for that short 3 week spurt of taking but what's the point if I feel like ass, libido isn't there, and can't exercise?
Found another doc who put me on HCG injections which are far less invasive as far as medicine goes. It's an injection bi-daily that is meant to supplement for the LH and although my LH was within normal range on all of my previous blood tests, HCG has brought my T from 300-400 range up to 750. I feel great on it. May be worth a try for you!