I had sexual intercourse with my boyfriend and he was fingering me and was doing it a little rough and afterward I had gone to use the restroom I had a burning and it hurt really bad. I have been using neospiron but it doesn't seem to work and it has been a month now and I don't have healthcare insurance and the moment so I really need your help

It could be as little as a scrape and feel a lot worse. Stop using neosporin, keep the area clean. There isn't really anything you can do in that area.