You dont have to tell your parents to go to the doctor and get this checked out, if you dont want to go to your family doctor for it, you can go to another walk in clinic maybe, or look in your area and see what planned parenthood clinics(could be called something different depending on where you live) that could maybe exam you and help you heal. If you're saying the tear is as bad as it is, the only solution is to get it checked out, who knows if it is severe enough a doctor might find that the only way to heal it is with stitches, etc. Dont leave it, it might not be infected now, but it can get infected easily in that area... and leaving it untreated and continuing to have sex could be making it so much worse. Especially if it is starting to bleed again at times, it means what healing is being done, is being re opened all the time. Dont try any creams etc, unless you go and talk to a pharmacist and explain to them what is going on etc and see if there is maybe an over the counter thing you can use, but im not sure if there is. The neosporin etc, should never be used internally and can make things worse or cause a yeast infection which will just be absolutely horrible with a tear. :( Hope you can get it healed up soon
-edit-
The bleeding is from my cherry isnt fully popped. so dont mind the bleeding part.