Assuming that the test result was for TSH, were you also tested for the actual thyroid hormones, Free T4 and Free T3? If so, please post results and reference ranges shown on the lab report.
TSH is a pituitary hormone that has only a weak correlation with thyroid hormone. The most important indicator of possible hypothyroidism is having multiple symptoms that are typical of hypothyroidism. Please review the following lit and tell us which, if any, you have.
Increased sensitivity to cold
Constipation (If you take laxatives you have this)
Dry skin (If you use skin creme you have this)
Weight gain/difficulty losing weight
Elevated blood cholesterol level
Muscle aches, tenderness and stiffness
Pain, stiffness or swelling in your joints
Heavier than normal or irregular menstrual periods
Slowed heart rate
Enlarged thyroid gland (goiter)
Hypothyroid patients are also frequently deficient in Vitamin D, B12 and ferritin. If tested for those, please post those results also.
I have found info suggesting that hypothyroidism can lead to prediabetes.. Have you been diagnosed as hypothyroid?