Do a comprehensive hormonal work-up:
-total and free testosterone
-fsh and Lh
-E2
-progesterone
-prolactin
-shbg
-tsh, t3, t4
Add to that a liver enzyme work-up.
Get your testicles checked and a semen analysis.
If you're test levels are within normal, I wouldn't bother with hcg or clomid...