Suspecting Diabetes

I’m 22 yrs old and I have an okay weight 170lbs 5’6ft. But lately I haven’t been feeling well, I’m not pregnant. But I am suspecting diabetes. I’m really scared because my grandmother is a diabetic and it runs in my family. Like now my feet are numb and the bottom and mainly my heels. It feels sort of like pins and needles. And kind of hurt. And my finger tips just started the feeling today. They’ve been doing this for a couple of days as well on and off. But I also have been super tired lately, like extreme fatigue. And a week ago my vision was blurry for 4 days and I knew that was off but thought it was my glasses. And I currently have a uti which I barely get... but have been peeing more lately. But I have been feeling like I’m gonna pass out, I almost fainted three days ago while cooking I had to sit down. I just want advice. I thought I was a diabetic before because I was just feeling nauseated and felt better when I ate but the doctor said I wasn’t but she did say I was borderline based on my bloodwork.. that was 10 months ago. I’m really scared... so please don’t comment anything rude.