Period Pains

okay here goes,

ever since i was 12 i’ve always had the worst period pains on this planet. i would get pain in my rectum/ lower back. it literally felt like someone was shoving a needle up my butt. it was the worst feeling ever. every time my period comes i cannot do anything. i cannot eat or sleep or leave my bed. it feels like i need to use the washroom all the time but nothing comes out. i’ve been to what feels like a million doctors for help and they keep giving me pain killers that do not work such as tylenol extra strength, neproxen, midol. i’ve even gotten drugs that had to be prescribed. i’ve tried everything no tea, heating pad, or bubble bath can help me. it’s the worst thing on the planet. please tell me that i’m not the only one that has pain not in their stomach. and what they can do to help me!