For many women, it is normal to feel a little bit of discomfort after intercourse especially if things were intense. But the worst is severe itching on the vaginal lips (labia) or on the vulva. It will definitely be unbearable and cause you to feel miserable.it’s obvious that vaginal itchiness can be as a result of an infection after inprotected intercourse, common causes : Vaginal yeast infection: Yeast infections are caused by a fungus called candida albicans. Chemicals Certain products used by women are rich in harsh chemicals. These compounds irritate the delicate vaginal tissues. Lubes, oils, and creams can be causes of itchy vagina after sex. STIs (Sexually Transmitted Infections) Almost all STIs cause vaginal itching when not treated on time. Unprotected sex poses a greater risk for contacting a STI. It is always advisable to go for check up to rule out such infection. Here are common STI characterized by burning and itchiness Bacterial vaginosis Bacterial vaginosis is often confused with yeast infections. A woman’s vagina is comprised of a healthy bacteria and harmful ones as well. in the vagina other some noteworthy causes; rough sex vaginal dryness allergy I hope you happy with information kindly rate it. thank you.