Sorry to hear all that hun. Hope we can help. Can you tell us what age your son is? Does he have a routine at all (even very roughly)? If he's very little, I really wouldn't mind cuddling him or feeding him to sleep and then putting him down. If you have a sling, that can be a great easy nap option.
I really want to say though that the first weeks with two small ones is really tough. So if you have any support around you, use it, take a break, have a nap, do something to recharge your batteries, for your own sake but also for your little ones.
I have split your post off, and created a new thread for you. That way you'll get more eyes. You might like a different title!
But keep talking, hun, and we'll help as much as we can.