How many months into pregnancy is it safe to have sexual intercourse?

Pregnancy refers to the process by which an embryo or fetus develops and grows within the body of a female mammal. In humans, pregnancy is divided into three stages: the first trimester (up to the end of week 12), the second trimester (weeks 13–27), and the third trimester (from week 28 onward). Pregnancy-related complications may include gestational hypertension, gestational diabetes, and iron-deficiency anemia. So, during which months of pregnancy is sexual intercourse safe? Below, we address this question.

During Which Months of Pregnancy Is Sexual Intercourse Safe?

Generally, sexual intercourse is considered safe in moderation during the second trimester—specifically between months 4 and 6 of pregnancy. During the first trimester, the placenta has not yet fully matured, and its attachment to the uterine wall remains relatively weak, resulting in less secure embryonic implantation. Additionally, insufficient progesterone secretion at this stage fails to provide robust hormonal support for the embryo; thus, sexual activity may increase the risk of miscarriage. In the third trimester, intercourse may trigger preterm labor. By contrast, the embryo is typically more stable during the second trimester, making moderate sexual activity permissible—provided movements are gentle and non-strenuous. However, under certain special circumstances—such as placenta previa—sexual intercourse must be strictly avoided to prevent life-threatening hemorrhage. Furthermore, both partners should maintain rigorous personal hygiene to minimize infection risk.

Knowledge Expansion: Key Considerations During Pregnancy

1. Sleep Position

Pregnant women should ensure adequate sleep and avoid staying up late, as sleep deprivation may adversely affect fetal development. Attention should also be paid to sleeping posture: during early pregnancy, sleeping position is generally unrestricted. During mid-pregnancy, care should be taken to protect the abdomen from direct external pressure. For women with polyhydramnios (excess amniotic fluid) or twin pregnancies, side-lying positions are recommended.

2. Emotional Well-being

Maternal emotional instability can impair fetal growth and development and even increase the risk of miscarriage. Therefore, maintaining a positive and relaxed mood is highly advisable. Moreover, the first trimester represents a critical period for fetal neural tube development; accordingly, expectant mothers should avoid exposure to tobacco smoke, alcohol, and harmful chemical substances.

3. Avoiding Harmful Stimuli

Pregnant women should select skincare or health products characterized by naturalness, safety, professionalism, efficacy, and foundational suitability—i.e., products that pose no harm to either mother or fetus while effectively addressing common skin concerns associated with pregnancy and childbirth. Additionally, pregnant women should minimize exposure to electromagnetic radiation: maintain a safe distance from televisions, and limit use of mobile phones, computers, and microwave ovens whenever possible.

The above outlines guidance regarding when sexual intercourse is appropriate during pregnancy. We hope this information proves helpful to you.