Pre-diabetes is diagnosed as a fasting blood sugar (done by a lab using a blood sample from a vein) of 100 to 126. Diabetes is diagnosed if the sugar is 126 or more. Both of your lab fasting results were less than this so you do not have pre-diabetes or diabetes. Your 2-hour results were also under the prediabetic range of 140-199, however your 2-hour readings were closer to diagnosis of prediabetes than your fasting. A 2-hour reading of 140-199 indicates pre-diabetes.

Having your period is associated with higher OR lower blood sugars. Stress and illness usually cause blood sugar to rise. Too much rice may also raise blood sugar. Therefore, it makes sense that your blood sugar was up because you had your period, were in pain, stressed out and possibly ate a too large portion of rice which is a carbohydrate. But, one reading on a meter is not diagnostic for pre-diabetes. I would suggest that you report your reading of 160 to your health care provider and ask if you can have another OGTT.

Recommendations to prevent pre- diabetes and diabetes are the same. These are steps you should take: maintain a healthy weight, engage in regular physical activity such as walking briskly 30 minutes 5 times a week, and eating a balanced variety of healthy foods and healthy portions.

I would suggest you ask to be referred to a dietitian and or certified diabetes educator to help you create an individualized healthy life style plan to decrease your risk of pre-diabetes. These professionals can also provide you with emotional support which will likely help to decrease your worries about getting diabetes. Good luck!