Back Injury

I guess I can't be healthy all at once. Last night, out of nowhere, my back started hurting. It wasn't too big of a deal and I thought maybe it was just sore. However, I woke up multiple times during the night and no matter what I did, I could not find a position that didn't hurt. This morning I woke up and the pain was worse than ever. I was crying and screaming and I said to my husband that there is no way birthing contractions could be more painful than this. I could barely walk or stand. Sitting was just as uncomfortable. I tried heat and ice. Due to other medications, I can't take any pain medicine so I waited it out. I laid the most comfortable way possible (but still in pain) and I am slowly getting better. I am now able to walk a little bit but it still hurts. I looked it up and it's my sacroiliac joint, which apparently also controls your legs (which explains their pain too). Wish for a speedy recovery of whatever caused this because I would love to get back to my life!