Deficiency of both qi and blood can easily cause chills. Eat more foods that tonify qi and blood. With sufficient qi and blood, the natural constitution will be enhanced. Pay attention to your usual diet. It's best not to eat raw and cold food, but to eat more food with moderate temperature.
You may also be accompanied by symptoms of kidney deficiency, which can be treated with traditional Chinese medicine, and it is also good to eat cream in winter.
Pay more attention to health care at ordinary times You are still young and will recover soon.