Cephalexin Monohydrate and vagina

took cephalexin for 6 days 500mg/4xdaily, after breast reduction surgery. at first i saw no side effects, but two days in i began to lose feeling in my arms. i've heard a lot of people say they felt nauseous, which i didn't, but i woke up on the fifth day with an agonizing burning sensation in my vagina. it is now been a few days and it continues to be red and irritated, itchy, and painful. no discharge or odour, and there has been no other change than taking the cephalexin. i would not ever take it again if i can avoid it.

I STARTED USING THIS DRUG CAUSE I WENT AND HAD A MASSAGE DONE AND THAT NIGHT MY BACK WAS SEVERELY RED THE DR TOLD ME A GERM HAD GOTTEN IN MY BACK AND STARTED EATING MY BLOOD SO THE DR PUT ME ON THE DRUG AND THE ONLY THING THAT HAS HAPPENED WITH ME NOW IS MY VAGINA IS REALLY ITCHY.