I was prescribed this antibiotic to start taking two days prior to HCG procedure for fertility treatment. Yesterday my food did not taste right and I had lost my appetite. That was the first day of antibiotic but then today I developed a severe migrane and nausea and ringing in my ears. I feel horrible and could not drive. Nurse said to stop taking the pills. Could this really just be from the antibiotic? How long will this last? I cannot function.took my last dose 10 am