I thought my low to mid back was kind of hurting last week but each day was slightly worse. By Friday it hurt just sitting in a chair. Today I couldn't bend over to put on underwear without screaming in pain. Now I'm getting sharp, shooting pains. Laying on the heat pad gives some relief. But I have taken 2 muscle relaxers, a pain pill and 4 Ibuprofen without getting any comfort. It almost feels like it's interior and not the back itself.