fighting sleep. at 2 weeks old??

my (almost) 2 week old seems to have trouble sleeping all of a sudden? he'll fall asleep at the breast or in my arms while im rocking him but as soon as i lay him down or put him in his swing he starts fussing. anyone know what i can do to keep him asleep?? starting to go crazy with having to be awake for 2 2.5 hours every time he wakes up. and like right now i want to have a shower since ive showered once since being home and im covered in milk and baby puke. but every time i put him down he fusses. heeellllpppp