What Causes A Fleshy Lump In The Vagina?

Hi, I'm a 22 year old virgin. I have never had anything inside my vagina. However, i have masturbated by rubbing my clitoris. I also used to do horseriding.



A few days ago i had a look down below and i noticed a fleshy lump inside my vaginal opening. Its at the top part of the vagina. I can see into my vagina below it. I have been worried about what this could be? Do you have any idea?

Also could i have broken my hymen by rubbing my clitoris? Please could you help me out..i am really worried