Thanks for your query.
Meth use affects sexual drive and sexual performance.
No studies have shown it to have an objective negative effect on the sperm count
If he is quite clean and has absolutely stopped using it, then it is no issue right now.
To confirm, you can always get a semen analysis
Regarding one ovary, if the other ovary is functioning well, then your chances of conception are pretty good.
Ability to conceive is dependent on the ovarian reserve
, that is , the ability of your ovaries to produce mature eggs.
This can be assessed by various blood tests like Day2 FSH, AMH and by AFC on ultrasound
Please consult an Infertility
specialist and have a detailed assessment, and dont waste time.
Ectopic pregnancy can also lead to tubal damage, which should also be assessed.