lower back pain on period

i’m in need of any advice to help lower back pain. i’m on my period on birth control and have other back problems too but this is all back cramps. it’s in my very lower back and it’s been for 2 days and is absolutely awful i can barely walk and every time i move the slightest bit i’m wincing it’s awful and i’ve tried so many things. I took midol that did nothing. I used a heating pad that helped a little bit temporarily. I was able to lay down comfortably before and not feel pain but now i can’t get comfy at all. I also tried lidocaine gel pain relieving strips and that did nothing too. I don’t know what else to try any advice of something to help will be appreciated.