Question
The patient had her period on December 28, 2017, had sexual intercourse with her ex-boyfriend on January 7, took contraceptives afterward, and had her period again on January 29. She married the ex-boyfriend on January 7 and has not seen him since. She met her current husband on February 5 and had her period again on February 27. On March 27, she did not have her period. She suspects it might be related to the ex-boyfriend and inquires whether she needs to undergo paternity testing and how to calculate the due date.
Answer
Based on the patient’s account, she took contraceptives after having sexual intercourse with her ex-boyfriend, got married on January 7, had her period again on January 29, met her current husband on February 5, had her period again on February 27, and did not have her period on March 27. She underwent a cesarean section on December 28. It is suggested that the patient consider the possibility that the situation is not related to the ex-boyfriend. The general duration of pregnancy is 270 days, but the child should be mature; the duration of pregnancy is not a specific number of days. A pregnancy of 274 days falls within the normal range.