How and how to help the baby?

How and how to help the baby? Every morning, and every night the same thing. At night he turns over, twists, burps sometimes cries while sleeping, and under the morning at 5-6 am he screams through sleep, pulls legs, burps and then repeats everything, it seems like he can't poop while sleeping until he wakes up, doesn't let anyone touch his belly and squeeze his legs towards his stomach.