I thought I hadn't slept before. Turns out, then I still slept... Now …

I thought I hadn't slept before. Turns out, then I still slept... Now my son cries at night until I pick him up, immediately closes his eyes, puts him down and again wild crying. Before he woke up at night, I gave him formula or a pacifier. But now he refuses to eat, even on my hands... He wakes up almost every hour, I get up and rock him. What could it be? This behavior has been going on for four days.