Okay I sat down to nurse my LO starting around 5:30pm. He continuously has nursed for about 2 1/2 hours. I let him drain one breast first before switching sides, which he never has to do. One breast is usually all he needs to be satisfied during a feeding. We nursed off of each side twice and I feel tapped out. he pulled off and on a lot while feeding but still nursed the majority of the time. He cries whenever I pull him off to see if he's just comfort nursing. Finally he got fussy while eating, I think because I'm empty. We tried soothing him, but finally DH thawed some frozen milk and offered him a bottle. He started scarfing it down but soon got fussy again and began to cry. I normally have an oversupply so I'm dumbfounded. His latch isn't great but I feel like most of the time he had a pretty good latch and was sucking well.

His little belly is tight and we've burped and burped him until I'm afraid I'm going to make him sore from picking him up and moving him in so many different positions. He's still not satisfied. And crying. He won't take a pacifier.

I don't know what to do!!! What's wrong? This has never happened!!