So I'm a virgin but I do masturbate. Lately I've been trying to work up to a larger vibrator, but I've been having a hard time. And I'm wondering if something is wrong? My hymen is pretty stretched, but it feels almost like there's some sort of large-ish, hard lump behind my hymen, on the top of my vagina near the entrance. I can get a finger past it (so it's maybe an inch long?) , but that area feels harder than the area behind it and almost like the entrance area is v shaped because of the lump protruding down. Is this normal? If not, what could it be?