help please!

ami
I spend my entire day trying to put the 5wk old baby down!
He's fed, he has a fresh diaper, and he falls asleep in my arms instantly. Put him down in crib, on floor, in mommaroo, ANYWHERE but in my arms & he screams.  Pick him up and he falls asleep immediately.  I've tried to wait out the screaming - an hour is the longest I could deal with.  😭
This continues all day, every day.  
My husband doesn't understand what I do all day.  I should be able to do SOMETHING besides hold baby while he sleeps - it's so hard to even use the restroom or eat or shower.
Am I doing something wrong?!