Newborn not sleeping. Help?

Our 2 week old baby is about to start his 3rd night (and 2 days) of poor sleep. He’s been nursing nonstop and sleeping maybe a half hour at a time. Starting to get really fussy if he’s not nursing. Hell fall asleep in my arms but if i try and place him elsewhere he starts crying. He’s also spitting up more often. Maybe its my imagination but i think his stomach is bothering him (i do burp him). He has his check up tomorrow but wanted to see if anyone had advice for us.

Signed,

Sleep deprived baby and mommy