I think I have diabetes? Please help!?

Hi, I'm a 13 year old boy. Yesterday I ate a Twix PB and Twix 4 to go and i ate all of it. I went to the bathroom to pee. The next day my dad says there were ants on the toilet. He figured that I have diabetes. I ate candy like 1 or 2 times a day. Like not everyday. I don't think I don't have the symptoms of diabetes. My mom had diabetes when i was born and my grandma has diabetes also. If you have sugar in your urine, does it mean you have diabetes??? What should i do to keep sugar away from my urine? Do i drink a lot of water?