How many weeks of pregnancy does a baby have to be born to be considered premature

Patient's question:

No

Doctor's answer:

Generally, it is calculated from the first day of the last menstrual period, with four weeks considered as one month, totaling ten months. Being 280 days is considered full term, which is what is referred to as "ten months of pregnancy." You can choose the appropriate method of childbirth one week before or after the full term.