Newborns have their days and nights mixed up. In utero they were lulled to sleep while you walked around all day, and then they kicked you in the bladder and were awake and moving all night long.
Go out about 9am and get some daylight on baby's retina. During the day wake every 2-3 hours to feed, closer to 2 hours is best. no swaddling, keep things bright and noisy. At night, keep things dark, quiet, swaddled, shushing and rocking. when baby will let you, let them go 3-4 hours at night between feedings.
also know there is a growth spurt at about 1 week, where they make up for the initial time waiting for your milk to come in where they nurse non-stop if you are nursing.
definitely make a SAFE cosleeping bed and lay down and nurse. get dh on board with geting up, changing diapers and bringing baby to you. that will help you to get more rest.
sleep during the day when baby sleeps too.
it will get easier.