As usual, I'm trying to figure out what's making me sick. Several factors are involved. I raised the dosage of my thyroid medication due to lab work, I took Diflucan and had eaten so much sugar to try and get through the past couple of weeks, and I started this medicine. Has anyone had an allergy to this med? Last night, I was up all night sweating. I have a migraine, I'm stuffed up in the nose, but I also took Diflucan the night before and ever since then I've been sick. I've had diarrhea several times. I should say I was already sick, but I got worse. I see flu like symptoms can be a side effect. Anyone have problems with it?