A month ago I moved to Illinois. Two weeks ago I finished an antibiotic for a sinus infection that was prescribed before I moved. Last week I had a cold and now my symptoms are back--headache in forehead, and back of head, teeth on right upper side are achy, cough, green drainage from right maxillary sinus when I use my Neti pot. Did the infection not heal totally, or I this new? Should I go on another antibiotic? I hate to let it go, because four times since 2002 I have had pneumonia from a sinus infection that drained into my lungs.