I don't know how to put the baby to sleep anymore. He's been going on …

I don't know how to put the baby to sleep anymore. He's been going on for five hours, coughing and eating, and he just wiggles his arms and legs and can't fall asleep. It's always hanging on my chest, then spitting it out, looking for it, getting nervous. Is it possible to walk around so much for such a newborn???