I recently was prescribed Bactrim by my doctor. Yesterday morning I took one, and yesterday evening. I had to leave work early, because I had this sudden mood swing, intense pain in my head and face and mouth. I couldn't sleep all night, because I was restless. When I get up finally I look in the mirror this morning about 0900 and the left side of my face is swollen. Is it the medicine? Would it take that long to have negative side affects?/