Hi, back in the begining of November I caught what I thought was a cold. After five weeks of nose congestion I started taking Cefdinir. The congestion went away but in the half way through the antibiotics I began to get a dull head pain around my whole head. It keep me up at night. I could put my head on a pillow. After the meds, I went back to my general doctor. He told me I was getting better. But that night the pain was terrible. I called him the next day and told him something was wrong. He ordered a CT scan and found that I had a sinus infection in the frontal sinus' and ethmoid (spelling) sinus'. Since I am allergic to pennicillin, they put me on Cipro but later switched me to Biaxin. It has been slowly getting better, but I still have a dull ache around my head and nerviouness. It wakes me up a couple hours after I fall asleep. Could the CT scan have missed something or (since I've never had a sinus infection before) is this part of the sinus infection?