My lo is 10 weeks old. Starting today he’s been super fussy. My mil came over to help

Me today so I could do some work and he was inconsolable with her. He is overly tired and would fall asleep when I nursed him or held him but would wake up and fuss as soon as I put him

Down or passed him off. He always sleeps well in his crib and won’t let me put him down now either. He’s sleeping in my chest and will wake up from a dead sleep screaming. I’m calling doctor in am but any thoughts?