Sperm can make up a few days back

Normal men produce normal sperm in 2 to 7 days. Sperm production is continuous, but it takes 90 days for a sperm to develop from spermatogonia to mature sperm, so the observation period for infertile men is usually three months. If only due to excessive ejaculation all mature sperm out of the body, and no other diseases, the man will naturally produce sperm that can successfully conceive a woman after three months. If the infertility patient shows the phenomenon of oligospermia, dead sperm and weak sperm, then his effective semen volume is not enough after three months, and it takes a long time to recover after treatment.