where exactly is it? is it right next to your viginal opening? Try looking up vaginal glands. There are several that are for secreting......errr secretions, sometimes they can become inflamed.

I had this problem 2 times before and my OB/GYN says that is a duct that gets clogged with oil, soaps, and secretions. I put hot compresses on mine until I caused it to come to a slight head and sat in the tub with as hot as tolerable with epsom salts in it for about 10 minutes twice a day. I was able to drain it myself. When I saw my OB/GYN and told him about it, he told me it is nothing to worry about and the next time to call him and he will lance it. Very painless he said and only takes a few minutes compared to me dealing with my home remedy for about 2 weeks.

Hope this helps a little

When the female reaches height of the sex & feel comfortable while doing the sex