Ok so for the past 3 days ive had a crazy amount of pain caused by a red bum hard thing around my vagina i finally popped it and alot of puss and blood came out , Im sexually active im 16 is this some thing more serious
Yes, it could be something more serious, At your early age be a sexually active involve many risks, it could become a uterine cancer. I suggest you visit a doctor or tell your parents.
It could be a STD, I am agree with Mary, tell your parents or visit a doctor.