My husband and I are batting the idea around for him to do a vasectomy cause I too am having trouble with my Mirena and other birth controls I have been on. I think that we have a similar situation. We think we are done with having more children...we have two beautiful little girls but we can't help but think what if 5 or 10 years down the road we want to try for that little boy. I think maybe what you said had some truth that this is so final and that's why you're panicking. I know this wasn't much help, but I wanted you to know there were other people out there with your situation.