birth control
"I have been on the Nuvaring for a little over a year and really liked it at first. Couldn't notice it once in place and I never had an issue with it slipping out unexpectedly. I used it PERFECTLY and never got pregnant. This month has been different (i.e., midmonth cramps, breast tenderness, lower back pain). I have taken three pregnancy tests, and all have been negative. The one thing that was different was that we used an oil-based lubricant for the first time this month, and in the med info, it says oil-based vaginal medication can increase hormone levels by up to 40%. Can't find any info about the effects of using oil-based lubricant with Nuvaring, so be careful about that! "