After a vasectomy, it is generally recommended to wait at least 2 to 7 days before ejaculating. Some medical advice suggests waiting around a week to allow the tissues to heal and reduce the risk of pain, swelling, or complications such as infection or sperm granuloma. However, many men may be able to masturbate or have sex comfortably within a few days if there is no pain or discomfort. It is important to listen to the body and only resume ejaculation when fully comfortable. Additionally, sperm may still be present in the semen for several weeks or even up to 12 weeks after the procedure, so other contraception methods should be used until a sperm-free semen analysis confirms sterility.