Headaches

My back pain is continuing, it is getting better, just very slowly.
I'm off to see the doctor in a bit because my physio is concerned that I have made little progress in the last 2 weeks and because I have now had a headache for 4 days. I stopped taking all medication yesterday in case that is what is causing the headaches. Now I have a headache and bad back pain :-(

Also the tens machine has stopped having any beneficial effect.