Vaginal Infection Vaginal Infection in Sanghavi, Pimple Gurav, PCMC, Pune. Vaginal infections can be caused by a number of things, including yeast, bacteria, or other organisms. Symptoms include itching, burning, and changes in vaginal discharge. Types of vaginal infections Yeast infection: Itching, burning, and a thick, white discharge that looks like cottage cheese. Bacterial vaginosis: A grayish-white discharge with a foul odor, especially after sex. Trichomoniasis: A greenish-yellow discharge that may be frothy. Risk factors Using an intrauterine device, Having multiple sex partners, Being pregnant, Having diabetes, and Having a weakened immune system.