Hi, Last Month, In A Medical Check Up, The Fasting

Hi, last month, in a medical check up, the fasting sugar in my blood showed number 112, which it indicated that its a prediabetic stage.
i am 35 and little overweight. i have started exercise also since last 3 weeks. Also i have cut down sweets and rice from my diet.
Do i need to consult a doctor in person and need some medication on this? Is this a reversible condition? Do you suggest any specific diet plan?