Vaginal infection: Vaginal infection is the infection of the vagina and vulva (tissue at the opening of the vagina). It can occur due to the overgrowth of bacteria, fungi or yeast, vaginal atrophy (a condition that commonly occurs after menopause), sexual intercourse, irritants such as harsh soaps, perfumes, body washes, vaginal contraceptives or tight-fitting clothes. Vaginal infection can cause inflammation, itchiness, thick discharge, change in colour of the discharge, burning sensation or pain during urination, vaginal bleeding or spotting, and pain during intercourse.