What did your Dr say about the lab test? Did he/she diagnose you as pre diabetic?
I wouldn't worry too much about a random fasting glucose.
Your dr should be able to order an A1c, hopefully at no cost, as a preventative test, based on your mildly elevated glucose, if you want to investigate further. The A1c will give your Dr and you a peek at the average blood sugar over three months, much more accurate than a single, random glucose.
Also, for pre diabetic, metformin can be prescribed, again at no to low cost, as a preventative to Diabetes.
Most important ,again, is a Discussion with your Dr., You could also perhaps get a referral for a one time nutrition consult with a Registered Dietician. He/She can educate you on tips/tricks and ways to get the calories you need and help with pre-diabetes.
Best wishes to you, Aaaronc879,