Vaginismus refers to a condition when muscles around your vagina get tensed up or contract involuntarily. The vagina is a part of the female reproductive system and connects the lower part of the uterus (cervix) with the outside of your body. These involuntary muscle spasms happen when something like a penis, a finger, a tampon, or a medical instrument tries to penetrate your vagina. These spasms can be mild or very painful.
