I have pain in the lower back and middle back, what could be the cause? What should I do?

The pain in the lower and middle back could possibly be caused by a condition known as lumbago, which is localized pain in the lower back caused by a sudden movement. It is important to consult a doctor for a proper diagnosis. In the meantime, there are treatments that can help relieve your pain, such as muscle relaxants with pain relievers, anti-inflammatory creams, warm compresses, and other therapies like osteopathy or acupuncture. If the initial treatments do not provide relief within a week, it is advisable to seek further medical advice.