Flagyl and diarrhea

I just finished a 10 day (4xday) prescription of Flagyl (250 mg) prescribed by my Gastro doctor for treatment of (SIBO) Severe Intestinal Bacterial Overgrowth. Two days after finishing Flagyl I broke out in hives all over my body and my upper eyelids were very swollen. Now my dermatologist has me on Zyrtec and Prednisone. Has anyone broken out with hives and had swollen eyes from taking Flagyl?

After 1 day of taking this medication, my body instantly didn't agree with it. I experienced dizziness, nausea, dry mouth, no appetite and the worst diarrhea that i ever experienced. I also kept vomiting and recieved a yeast infection in the process. Finally after 3 days I stopped it under my own discretion. My doctor couldn't believe it was doing of this in 3 days. Every medication isn't for everyone

I had the usual side effects: nausea, diarrhea, bad taste, etc. I wasn't able to finish the 10 day course (only 7 1/2). My biggest complaint is the bad taste and the furry yellow tongue. My doctor gave me an anti-fungal but it hasn't gone away. It has been 2 weeks since my last dose and my tongue is still yellow and furry! I am disgusted and embarrassed.