Blood sugar value observed first time.

Hi, I am a female with age 40 years.i have thyroid and using medication with power dosage of 75 mg power.i don't have sugar earlier.in the recent 1 month I lost the weight and not felling active and feeling tired always. I went for check up thinking that thyroid is increased. The results from the tests are as below. Thyroid test results: Thyroid stimulating hormone--8.6 uiu/ml Total thyroxine(T4)--- 10.2 ug/DL Total triido thyroxine(T3)---113 Ng/DL blood and urine test results: Heamoglobin gms : 8.5/58% Blood sugar(R)---320 mg/DL The above tests was made after the break fast. And it has been said that sugar was observed in both blood and urine. This is the first time I came to know dat I have diabetic. Can you please suggest what are the precautions to take from now or kindly suggest what are the next steps/tests that I can go for.