Girls, I have a question. For the past four months, my son has been cr…

Girls, I have a question. For the past four months, my son has been crying, screaming, and crying all night long, while he's sleeping. I picked him up, rocked him, and he continued to sleep peacefully. Today, he practically didn't sleep, he slept for 5 minutes, then turned over, crawled on his hands and knees, started crying, crying, screaming, and then slept! My husband took him down to the first floor at 4 am, brought him into the hallway and said "he's asleep!" And in the process, he crawls, cries, cries. What is this? We called a pediatrician to our house today, but I wanted to ask you something like that