Girls, hi! I had my blood sugar checked for sugar and the result was 5…

Girls, hi! I had my blood sugar checked for sugar and the result was 5.9 fasting. They said it's high and sent me back for re-testing at 6:05 pm. Is this really serious?? ?I'm very worried, I'll see the doctor only tomorrow...What should I limit in food to lower my sugar? Honestly, if I hadn't insisted on checking my sugar, I wouldn't have known it was high...I often wanted to drink, constant dryness in my mouth, I'm constantly leaking ?In short, every day is a holiday, something's not right, I'm already tired ?‍♀️