Hello,
No, it does not indicate any STI in my opinion. Rough sex can also cause such symptoms since you also have itching which indicates a local
fungal infection aswell.
You can prevent these infections in future by eating a well-balanced diet, eating yogurt or taking supplements with
lactobacillus, wearing natural fibers such as cotton, linen, or silk, washing underwear in hot water, replacing feminine products frequently.
Avoid:wearing tight pants, pantyhose, tights, or leggings, using feminine deodorant or scented tampons or pads, sitting around in wet clothing, especially bathing suits, sitting in hot tubs or taking frequent hot baths, douching.
You can also use antifungal preparations for the treatment aswel if from above remedies aren't of any help for you.
Hope I have answered your query. Let me know if I can assist you further.
Take care
Regards,
Dr SAMEEN BIN NAEEM, General & Family Physician