Patient's question:
I got my period on the 20th of last month, and it's been delayed by 10 days this month. A pregnancy test showed I'm pregnant. I've been feeling constantly nauseous, don't have an appetite, and am very sleepy. When I went to the hospital, the doctor said I'm about one and a half months pregnant, but it's only been about 20 days since my last sexual intercourse.What kind of help do I need: When does the pregnancy period start to be calculated from?
Doctor's answer:
Usually, whether it's calculating the time of pregnancy or estimating the due date, it is calculated from the first day of the last menstrual period. As for the due date, adding 280 days (40 weeks) is the standard. However, in reality, the correct calculation should be—when sperm and egg combine and implant, this is when pregnancy begins. From this time, adding 266 days gives a more accurate due date.