It is not uncommon to experience some spotting after sex during pregnancy. This can happen due to increased blood flow to the cervix or sensitivity of the cervix during pregnancy. However, if you notice heavy bleeding, severe pain, or any other concerning symptoms, it is important to contact your healthcare provider right away. Otherwise, if the spotting has stopped and your baby is still active and moving as usual, there is likely no cause for immediate concern. However, it's always a good idea to discuss any changes or concerns with your healthcare provider during your regular prenatal visits to ensure everything is progressing well with your pregnancy.