I was just prescribed fluticasone nasal spray i took my dose last night for the 1st time, i was fine. Woke up took my 2nd dose along with a prescription from the OBGYN for bacterial infection (metronidazole tab 500mg. take one tablet 2 times a day) last night was i started this presc. also. After I woke up and took my 2nd doses... diarrhea with in an hour... then I started to shake and didn't feel myself, would have been uncomfortable if I would have had to drive anywhere. looked up these meds and it said to not take the allergy if you have an infection. When it was prescribed to me 4 days ago I had not been to the obgyn yet. Can you tell me what is possibly going on