Have I got diabetes???

Yesterday, I did a blood test and got 8.1 and then did it again about 4-6 hours later and got 8.6. In between that time I had some pasta, a small portion of chips and a chicken kebab. To be sure I had diabetes I was checked again in the following morning and I got 5.8. At around 5 in the afternoon I checked again and found that my results were 6.5 this time and inbetween the last blood test and this one I had a cheese salad baguette and some curry. Have I got diabetes, I am 13 years old