I am seventeen and have just recently become sexually active. Although sex is enjoyable, I also feel pain that lasts up to a week at the back of my vagina. I have tried using lubricated condoms which helped a little but not much. My problem doesn’t seem to be a lack of arousal or lubrication, but the piece of skin between my vagina and anus. It almost completely covers the opening of my vagina, and, since it isn’t really a part of my vagina, it doesn’t stretch properly. It can often become abraded, a little inflamed, and sore. This doesn’t seem normal. Is there anything that I can do about it myself, or should I try to book an appointment with a gynaecologist?