How To Control An Old Bleeding Dot Near Vagina?

Hi, I am 14 years old and I have had 3 partners that I have had sexual relations with. We did not have sex but we did have oral sex. I have a dot near my vagina that has been there for about 11 months and it has stayed the same size. today I accidentally cut it in the shower from shaving and it wont stop bleeding. I really hope it is just a cyst and not any type of std. can you please help me?