Your experience is very similar to my experience. I feel great the first 8 weeks or so, then only OK for 4-6 weeks, and marginal for the 2 weeks before the next insertion. This site is such a great education in some very critical issues, especially for guys like me, happily cruising through the 4th quarter. I am getting a sensitive E2 this week and then I'll talk to the doctor about transitioning to self injections. Depending on the doctor's response, I now know there's an option with Defy. Thank you for the input.