I feel the doctor is dismissing my complaints about pain during sex, saying it's normal at my age. What should I do?

Start by preparing for the visit: write down your symptoms (when they occur, what makes them worse) and go in with specific questions. If the doctor dismisses your concerns, directly say that this worries you and demand an answer. If there is no reaction, change doctors. You can also consider telemedicine or clinics specializing in female sexual health, which will allow you to find an expert even if there is none nearby. Remember that your persistence helps not only you but also improves the system overall.