my girlfriend and i had sex for the first time without protection... i ejaculated the day before during oral sex... i have heard that sperm takes 72 days to form... could i have gotten her pregnant if i ejaculated the day before we had sex??
yes, it takes 72-74 days for sperm to regenerate, but no, it does not mean you are infertile. take it like you skin cells, as some are dying off, others are being made and the rest are maturing, so you always have mature sperm. unless you have a problem with your sperm count and such, it is impossible for a healthy,in that area, man to be infertile. there will always be mature sperm within the semen.