Can I lie flat at 15 weeks pregnant, and will the baby get enough oxygen?
In general, pregnant women can lie flat at 15 weeks of pregnancy without causing fetal oxygen deprivation. The detailed explanation is as follows:
At 15 weeks of pregnancy, which falls within the second trimester, the uterus has not significantly enlarged, so lying flat is usually safe and does not affect fetal development. However, if any discomfort occurs while lying flat, the position should be adjusted promptly; a side-lying position is recommended. Generally, obstetricians advise pregnant women to adopt a side-lying position after 28 weeks of pregnancy, as this helps alleviate reduced placental blood flow caused by rightward uterine rotation, improves placental perfusion, enhances fetal blood supply, and prevents intrauterine fetal hypoxia.
At 15 weeks of pregnancy, since the uterus has not excessively enlarged and significant rightward rotation has not yet occurred, pregnant women can comfortably sleep either on their back or side without risking fetal oxygen deprivation. Pregnant women should simply focus on maintaining a comfortable posture.
If a pregnant woman experiences any discomfort, she should promptly seek medical evaluation. It's also important to get adequate rest and avoid fatigue and stress during daily activities.