RE: Anyone seen this BF behavior before?
My 8-week old DS has also been fussing during some BF sessions for the past two weeks. I was worried, but it wasn't with every session, and he's in good health (confirmed by the ped. today.) He'll eat, then pull off and cry, and then latch back on with vigor, sometimes pulling his head (and my breast) back. The only thing I can equate it to is the change in his digestive system, as he transitions to less frequent poops. I think he got so used to pooping with every feeding, that he still tries to do it even when he doesn't really need to go.
For what it's worth, I got some peace of mind after reading a FAQ on the kellymom site that said some babies get fussing while feeding between 6 and 8 weeks. They also suggested it could be a number of things, such as loss of latch, milk too fast, milk too slow, transition between fore milk and hind milk, etc. I know your DS is a bit older than that, but it made me feel better.
Cathleen
Mom to DS 8, DD 5 and a Greyhound Princess