Should i tell my mom?? my sis had bruises on her neck after i came back from a vaca wit my parents, i think it was my uncle bc he was the only other person there.. I think he hit her

YES

tell your parents now

it hurts at first because " the cherry is broken" which is a thin layer of skin that breaks so the first time girls have sex it hurts and it bleeds but after the first time it does hurt again because the skin that ia torn does not break again/ grow back.