Kresta,
This happened to me!
I was nursing Parker exclusively and CONSTANTLY until he was about 8 months old. At around 6 months, I got the WORST case of PMS that wouldn't go away. Crampy, acne, bloating, moody, etc....it stayed for like two weeks and then....
you guessed it.
I got my period back and it stayed...got one every month, nursing him or not...until I had my IUD put in a few months ago
