Hi, last year I had my son at 32 weeks. Originally he wanted to come out at 30 weeks but we were able to keep him in for 2 extra weeks. The doctors nor I have no clue why he was premature and he only spent about 3 weeks in NICU. He was on the lowest percent of oxygen for a week then in the incubator for a week and finally doing well on his own for another week and able to come home. But they still could never figure out why he was early and either could I?