In sperm retrieval, if a male partner chooses to use his sperm then he has to produce a semen sample, which is then treated for combining with the eggs. After the semen sample is the sperm is separated from the semen fluid in the lab. In some cases, surgical procedure is used to extract sperm directly from the testicle, this method is known as testicular aspiration. Otherwise, in some cases, donor sperm is used in the IVF procedure. Sperm retrieval is a simple process and recovery time can range from a few days to a week. Listed below are few points to keep in mind: It is advised to avoid strenuous activities. You may also be given antibiotics before or after the procedure to lower the chances of infection. If you have stitches, it may take some time to heal. For returning to heavy work and the normal lifestyle it may take 5-10 days.