We're TTC number four. DS1 is 8 (in two weeks time), DS2 is 5, DS3 is 8 months old and is a surviving twin. Since his twin died at birth, I've been desperste to conceive again. The older two are real buddies (most of the time) and I really want DS3 to have a sibling as close in age as possible. Beginnings of cold feet yesterday. I need some inspiring stories, please.