Period or Worse?

I have had one week off every month from my period it feels like since the beginning of this year. I just got married in May & I feel like a terrible wife because the sex life is a total hit or miss (I mean luckily I can please him, but he loves to please me too but can't).

I have such bad pain that I'm literally in tears, I can't breathe or move from how bad the pain is. The pain will literally even feel like it's going from my vagina to my butthole, and then it's playing ping pong between my front and back. I bleed sooooo much and constantly feel weak & tired.

I have been on birth control since I was 16 & I'm now 22 & it seems to get more irregular & more painful the older I get.

Does anyone know what this could be? Does anyone else have this problem?