birth control
"I would strongly suggest this product - I've been using it for about a year and a half with no complaints. Occasionally it slips down a little, but that's easily fixed. The only difficult part is that you don't develop a routine, so you have to mark a calendar to remember to take it out / put it in. I've only forgotten once, by a little less than a day, but that meant I had to wait a week to have sex."