I would buy a nice microscope, sperm show up very nicely. Save a lot of money. 400X is fine.
Do you have dental amalgams? They are >50% mercury. The Hypothalumus has an affinity for mercury.
The hypothalumus is the master endocrine controller. It's part brain and part gland. Low testosterone and low thyroid can really mess up immune system and reproductive functions.
Metal blood tests only show recent (6 wks) exposure, so a chelator / urine challenge test or fecal metal test would be accurate:
http://www.detoxamin.com/catalog/index. ... ucts_id=75