It is generally possible to have a normal delivery after undergoing a myomectomy, even if it was performed 13 years ago. However, the decision will depend on various factors such as the size and location of the fibroids removed during the surgery, any complications that may arise during pregnancy, and your overall health condition. It is important to consult with your healthcare provider who can assess your specific situation and provide guidance regarding the best course of action for you. They may recommend additional monitoring or interventions during labor to ensure a safe delivery for both you and your baby.