Patient's question:
How long after sex can you use a pregnancy test to check if you are pregnant?Doctor's answer:
Generally speaking, if pregnancy occurs after cohabitation, blood HCG can rise on the 11th day, early pregnancy can be detected as positive after the 13th day, and a gestational sac can be seen on ultrasound 21 days later. Generally, doctors recommend that women with risk signs of prenatal examination maintain personal hygiene and avoid sexual activity. Additionally, patients should also create an environment conducive to emotional stability and stress relief. Wishing the patient a healthy delivery.