Just concentrate on the GOOD feeling and don't worry about what is to come (easier said than done, I know!).
As my mother always reminds me, "If there's not blood or fire involved, it's not a crisis." Maybe I should make that my sig line, so I HAVE to read it every day!
As for the poop, would it help if you told dh that M has not had a poopy diaper yet this week that hasn't required an entire change of clothing and thoughs of a bath? Yesterday I went through three shirts, two pairs of pants and she went through two outfits. Amazingly enough A (2.5) was in one the whole day!!
It is not unusual for babes to blow out the diaper every time.