I am taking Flagyl 500mg x 2 and this is my 4th day. I have had tingling in my feet, sore throat, eye pain, neck pain, severe headache along with warm flushing on skin. I thought my headache was a tension one, so my dr. gave me fioricet-cod...it helps with headache pain, should I stop taking the flagyl due to my side effects? or finish my entire dosage?