should a thirteen year old go through this?

So I'm thirteen and I bleed through a super plus tampon in 3 hours so I'm always running to the bathroom and I have SEVERRRRRRRRRRRRRRRR PMS it's like the worst ever I'll lay on the floor and bawl for hours due to cramps, and everything pisses me off and I cry every two seconds I get bullied so often for it. I am on birth control and have tried many but it not any better the PMS the flow, nothing. I need a break!!!! I can't even go out and have fun! Did I mention my period lasts 8 days! Fun and I've had multiple doctors visits and they tell me to suck it up it's menstration. Someone help?!?!