Girls, hello and Happy New Year! ??Such a question about the gestation…

Girls, hello and Happy New Year! ??Such a question about the gestational period is 32.6 weeks, according to ultrasound they set the period as 34-35 (meaning it will be 35-36 next week). Will they put the baby in the hospital based on ultrasound or by the menstrual cycle? I'm reading here many stories from girls who have been carrying babies for longer, and I see a big difference in dates, and I'm afraid that they might put the baby in the hospital based on the menstrual cycle.