Hello, I Have Masturbated For A While Now And I

Hello, I have masturbated for a while now and I have had tight foreskin for about a year, I am 15 and the foreskin has been dry around the head of the penis, I also saw a red orange vein stick out after I masturbated today and what appeared to be a spot of blood. It does have a bad fish oddur too, any clue what it is and how to treat it? I am allergic to nothing and no past experiences