If your baby hasn't had a bowel movement in 13 days and is not exclusively breastfed, it is important to consult a doctor. You could consider scheduling a video consultation with a healthcare provider or using a telemedicine platform. In the meantime, you can try gently massaging the baby's belly in a clockwise motion, doing bicycle leg movements in the air while lying on their back, and feeding them every two hours. It may also be helpful to temporarily hold off on introducing solid foods until a bowel movement occurs.