I'm 14 and when my foreskin is pulled down and I'm erect my frenulum starts to hurt like it's being stretched too much is this normal around my age?
Yeah it's normal ,just masturbate ,if do it in shower it softens the skin and you get harder
Stretching exercises is the best solution ,when you have sex the penis is gripped in the vagina and can tear the frenulum causing bleeding but it's ok your penis will heal