What are the chances of getting pregnant when my husband takes a low does of testosterone shots?

Hard to say: Testosterone injections can suppress the formation of sperm by the testes, so it is possible that your husbands fertility is diminished. However, that does not mean he is infertile by any means. It is recommended to use your usual contraception if pregnancy is unwanted. If you are interested in becoming pregnant you may wish to have a semen analysis to determine any effect the injections have had.

It Depends: When evaluating medications and potential side effects, both dose and frequency are important. Exogenously derived testosterone is known to feedback inhibit the production of sperm cells, so t-shots should decrease sperm count. If fertility is a concern, your husband may want to obtain a sperm count. If the count is adequate, then his t-shots may not be the problem.

On the other hand: If you don't want to conceive at this time, use another form of birth control. While any testosterone dose may lower the sperm count, it only takes one sperm reaching the ovum to start a baby. It is not a reliable form of birth control.