Had injection this am. He went in from lower up to area, same as last time. This time he ran into blood vessel being right next to nerve and in the way. Not sure exactly what happened, but pretty sure something got shot in there anyway because I felt the pressure. (Bad!). So then he went in from above with another injection instead. I had a lot of back pain from it, but pain meds brought that down. The thing I'm scared about is that after about 7 or 8 hours, I developed a bad headache. It's about 11 hours out now. Head still hurts. It helps a little to lay down. Should I be worried? I figure unless it gets worse, I can call in am. Hoping it goes away by morning. I've had cervical epidural & nerve root blocks, lumbar facet joint injections, and one other lumbar epidural & never had anything like this happen before. Thoughts?