if there's any temperature etc, I'd be off to the Drs, or see if you can find a locum who will come to you.

if you don't think he's sick, just a little snuffly, jump into the shower with him, and help him clear his nose, then give him a massage while drying him, some skin to skin time to help him calm down, a nice long feed, and then see if he'll settle.

you can also elevate the head of the cot slightly, which can help with congestion.

thinking of you, hun ... it's rough!