a very concern question

hello i need someone opinion... if someone had baby at 28 weeks or 33 weeks which they had a home water birth... is the baby suppose to go in the NICU to couple of days, weeks or month... because I know a girl claim she had baby around that time.. mind you she's a nurse she was telling a group of peoples she having baby in January, the other half in February, the other half in May.. but she had baby in November and I think her child was full term cause that baby didn't stayed in the hospital and for premature babies they gotta to stay in the hospital for a while for fully get that proper oxygen....