<s>[INST] I dont have money.  I am just an ordinary lady trying to a  child.  My husband has lost his job for the past two years. My husband complains of odur in my Virgina, so i normally put lime juice before sex.  Can it change the motility  of the sperm and prevent pregnancy [/INST] Dear Madam, Your suspect is right. Lemon juice is acidic, and it can affect the motility of the sperms and quality of the semen. Please stop using lemon juice for vaginal douching just before the intercourse. Do OT use any deodorants also which are harmful to the sperms. If at all you want to have a vaginal douche before intercourse, you may use plain water. If there is foul smelling discharge from your vagina, there is likelihood of vaginal infection. Please get examined form the doctor, may be at ER and get treated. Even vaginal infection also affects the sperm motility and semen quality. Initially you may try by discontinuing the lemon juice douche. However, still if there is any problem in conception, I do not see you have any alternative that visiting a Gynecologist. Hope this helps you. </s>