urinary tract infection
"I've had many UTI's in the past but usually keep them at bay by taking cranberry pills daily. Well, I slacked and got a UTI. I think I've taken Bactrim before but I don't ever recall feeling like this. I was fine this morning but by noon was very shaky. I felt hungry and nauseous at the same time. Forced myself to eat and felt slightly better but couldn't focus on work and am feeling down in the dumps (depressed?). I also had trouble sleeping last night. Oh and my pee still burns after 2 doses. So if the symptoms don't improve by tomorrow I'm going to see about switching to something else."