A lot of confusion arises in mind during pregnancy and couples are usually questioning about what to do and what not to do during pregnancy. Sex is one of the most common topics asked about related to pregnancy.
Yes , you can have sex during pregnancy and sometimes it is considered to be inducing labor smoothly, when you are full term. There is no evidence that shows you should avoid sex during pregnancy and that it can harm the baby. The baby is protected by a bag,the amniotic sac and it is filled with amniotic fluid which provides a good cushion for the baby. During intercourse the penis just goes up the vagina and is unable to reach this sac. A mucus plug that seals the cervix helps to protect against infection, so it is also not true that your baby will get an infection if you have sex during pregnancy.
You may consult your doctor in cases such as:
You have spotting during early stages of pregnancy
You have a history of miscarriages and premature birth
You have a history of cervical weakness
You have a low lying placenta
You have a vaginal infection
Having sex doesn’t start premature labor and it is also just a myth. Having sex during pregnancy may sometimes just prevent pre mature births. So forget about all these myths and in case of any confusion just consult your doctor.
Source - womenhealthfitness