Can you have sexual intercourse during the first three months of pregnancy?

Feb 11, 2025 Source: Cainiu Health

Dr. Zhang Lu

Introduction

Under normal circumstances, sexual intercourse should be avoided during the first three months of pregnancy. The first trimester is considered the early stage of pregnancy, during which the embryo's implantation is not yet stable. At this stage, the connection between the embryo and the uterine wall is not firm enough, and the stimulation and vibrations caused by sexual activity may affect the embryo's implantation, increasing the risk of miscarriage. This is especially important for pregnant women who already have issues such as improper embryo implantation location or signs of threatened miscarriage.

Generally, sexual activity is not recommended during the first trimester of pregnancy. The specific reasons are as follows:

The first three months of pregnancy are considered early pregnancy, during which the embryo's implantation is still unstable. At this stage, the connection between the embryo and the uterine wall is not yet firm, and stimulation and vibrations caused by sexual activity may affect embryo implantation and increase the risk of miscarriage. This is especially important for pregnant women who already have poor embryo implantation or signs of threatened miscarriage, as they should avoid sexual activity altogether to ensure fetal safety.

In addition, during the first trimester, a pregnant woman's immune system is relatively weakened, and the vagina's defense capability is also reduced. Sexual activity may introduce external bacteria into the vagina, increasing the risk of infection. In the unique physiological environment of pregnancy, bacteria can easily grow and multiply. If an ascending infection occurs, it may lead to inflammation such as endometritis or pelvic inflammatory disease, which can negatively affect fetal development. Infections can also cause premature rupture of membranes, further increasing the risk of preterm birth.

Pregnant women should maintain healthy lifestyle habits and a positive mindset. They should get plenty of rest, avoid excessive fatigue and strenuous exercise, and maintain a calm demeanor to reduce psychological stress.

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