I would consider working with a doctor. Trying to diagnose yourself isn't helpful. Ask for a physical and do proper fasting and then blood work in a lab to determine what your sugar numbers are. They then do a follow up to double check that. In the mean time, work on lifestyle. This includes exercise regularly, drop some weight, cut back on carbs and sugar. Get rest. And try to reduce stress. https://www.healthline.com/health/diabetes/how-to-reverse-prediabetes-naturally