How long does pinched nerve/ nerve irritation after a blood patch last ?

I had a blood patch done 7 days ago. This is like my 11th one ( yes I’ve had many) this has nacer happened before. I am having extreme pain in upper buttocks/ tail bone that feels like a radiating nerve pain. Hurts a lot when I move my legs and stand up. Have gone to the ER they gave me a mix of steroids/ nerve pain meds. Has this happened to you and did it go away ? They said they think it’s a hematoma or a pinched nerve but did not do a scan to check ? Thank you I’m really desperate for answers and I’m in a lot of pain and it doesn’t seem to be getting much bettter