It is generally safe for pregnant women with a low-lying placenta, also known as placenta previa, to have sex. However, it is important to consult with your healthcare provider first. They will assess the specific condition of your placenta and provide personalized advice based on your individual circumstances. In some cases, sexual activity may be restricted or prohibited due to the risk of bleeding or other complications. It is crucial to follow your healthcare provider's instructions and take necessary precautions such as avoiding vigorous activities or positions that put pressure on the abdomen. If you experience any unusual symptoms like vaginal bleeding, abdominal pain, or contractions after intercourse, seek immediate medical attention. Remember that every pregnancy is unique, so always consult with your healthcare provider for personalized guidance regarding sexual activity during pregnancy with a low-lying placenta.