DS has been super fussy the past day or two, wants to nurse all the time and be cuddled, and is sleeping badly...waking up every hour or two when I was getting 4-5 hour stretches before.

Last night he wouldn't go to sleep...he kept sucking violently on my nipple for a few seconds, pulling away and rubbing his face against my breast hard while screaming and then sucking desperately again. I thought maybe he'd dried me up but he did the same on/off screaming with the bottle DH offered him too.

I assume this is some sort of growth spurt? Did your LO have a growth spurt around 12 weeks? How long did it last? I'm so tired!