Anyone ever had a bad reaction to a DTaP shot? I was given one on Tuesday and had some pretty significant muscle pain in my arm the next day or two but it was definitely getting better. I barely even noticed it yesterday. It seemed to be getting worse again this afternoon and into the evening. We got home about 40mins ago from a day out at a museum and I rolled up my sleeve to check out my arm and try to figure out why it was hurting again. I realized that my whole upper arm is swollen, red, and warm to the touch. No wonder it's sore again! I called the nurse advice line but they haven't called me back yet. Anyone else had a bad reaction to this shot? I imagine they will just tell me to take some benadryl and get on with my evening...