Why Does My Vagina Itch? Hi BeingGirl Experts, I was just wondering: I have itching on my private parts. I already had sex with my boyfriend, but he doesn't have any kind of disease. I'm not sure what it is and I'm worried. Hailey --- Dear Hailey, First of all, you really don't know if your partner is free of infection. Sometimes males may have a sexually-transmitted infection with NO symptoms. I would definitely not rule out a STD. But there are many reasons why you may have a vaginal itch. You may have a yeast infection or another type of vaginal infection, you may be having a reaction to a new detergent your mom uses to wash your clothes, or sometimes an itch is just an itch. If you have tried some of the over-the-counter vaginal itch medications, and you do not get relief, I suggest you let your mom know about this and ask your health care professional about it. Good luck, BeingGirl Experts Wondering why does my vagina itch? Get answers and tips from the experts at BeingGirl.