i had a bout with very painful intercourse. followed by what i thought was a horrific yeast infection. i tried to treat it with monistat which made it so much worse. it was like acid. i had this same side effect with the copper iud years ago. of course my doctor thought i was crazy and it was all in my head and they gave me a steroid cream. right before my period would start is when it got unbearable. i damn near went to the er a couple of times. they tested me for yeast infections, bacterial infections etc. everything was negative. according to my doctors, the iud wasn't even a consideration for the problem. it must be me. my poor husband. my poor children. i have been a miserable, uncomfortable crab. now that i have this iud and it is happening again, i know it is not me. it is a side effect of this device.