How can I tell if I have a low sperm count?

Get a Semen Analysis at a fertility clinic or a urology office rather than a general medical testing lab. Home sperm tests are not very useful, and you can’t tell by looking at your semen. If you’re not trying to conceive assume you’re fertile; if you and your partner are trying to conceive without success you should both see a fertility specialist (Reproductive Endocrinology and Infertility or REI) for testing and individualized treatment.