I am current on cd9, but on cd7 I had to go to the er for bad back/flank pain. Turned out I have kidney infection. Dr put me on bactrim for 10 days. I usually ovulate around cd14 so I will still be on antibiotic during most fertile time. Dr said it would not effect a fetus/baby if I did conceive but has anyone had experience with this? I read online some women actually conceived better while on antibiotics.