Hello everyone, can anyone tell me if they've experienced this? A baby…

Hello everyone, can anyone tell me if they've experienced this? A baby 1.5 months old is constantly crying and has pain while pooping. He cries after he poops and it's a real meltdown. No matter what we give him (baby food, eспумизаны, or even chamomile tea), nothing helps. They prescribed Lactazar and Aciphex for the baby, but after four days of calm, everything changed. The baby sleeps poorly, turns in his sleep and coughs. Has anyone encountered something like this?