It is not uncommon for babies to be in a breech position during the early stages of pregnancy, such as at 21 weeks and 5 days. However, as your pregnancy progresses, it is generally expected that the baby will naturally turn into a head-down position by around 32-36 weeks. If your baby remains in a breech position closer to your due date, your doctor may discuss options with you, such as attempting external cephalic version (ECV) or considering a cesarean section. It is important to remember that every pregnancy is unique, and while a breech presentation can sometimes increase the risk of complications during delivery, many babies are successfully delivered vaginally even when they are in a breech position. Your healthcare provider will closely monitor your progress and guide you through any necessary steps to ensure the safest outcome for both you and your baby. If you have any concerns or questions about your specific situation, it is best to consult with your doctor or midwife for personalized advice and guidance.