Is my 6-MP keeping my infection from going away?

  Do any of you stop taking your immunosuppressant when you are trying to cure an infection?  I have been on a couple of types of antibiotics trying to cure a simple female bacterial infection and it keeps coming back.  I am at my wits end.  What could be causing this?

Yea, they did do a culture twice actually. I guess I'll be taking flagyl for another week to try again. I hate the stuff. It makes me so thirsty and dehydrated, no matter how much water I drink. It wrecks my skin, too.