Epidural back pain - advice please

I had my daughter on. November 22nd and got the epidural when I was 5 cm dilated. It hurt so bad. It hurt as much as the contractions. I had to be poked 2-3 times and it ended up not even really working. The back pain was extremely painful right after my labor. It was horrible. It did get better once I got home. But lately it hurts badly now. Hurts when I bend, lift things, sit too long, stand too long. A lot of things hurts it.

My ob refuses to help. She said it wasn’t from the epidural but I never ever had back pain before. I never hurt my back. I never had a problem. It started once I had the epidural. Any suggestions on what to do