@carina62 sounds like you're off to a great start!
Yes
@douglas99 
, you can have type 2 diabetes if you're "fat", but you can also have it if you're "skinny". That's the point of my posts.
Why? Because skinny and obese people develop type 2 diabetes due to Non-Alcoholic Fatty Liver Disease (NAFLD), not their BMI.
At age 18, I weighed 95 pounds and ate significantly more calories and carbs than I do today at 143 pounds on the low carbohydrate ketogenic diet (LCKD). When I started the LCKD 2 years ago, I was both obese and living with chronic metabolic disease. Within months, all my health markers dramatically improved, and I became Metabolically Healthy Obese.
Granted, eating a limited amount of sugar and refined carbohydates as part of my healthy diet contributed to my weight gain from 95 pounds to 180 pounds over three decades, but I did not "overeat". But maybe you overate. If you did, I believe you.
Before I leave this topic I want to share one more experience that I believe is relevant to this discussion...
In 2011, I had inflammatory bowel disease (which was in remission), I weighed 160 pounds, I had subclinical hyperthyroid (which was in and out of remission), and I was about six years post my type 2 diabetes diagnosis and it was slowly worsing. A1c was now at 8.4%, I believe up from 7.2% in 2009.
Not sure why, but for some reason I decided I wanted to get my type 2 diabetes under control so I went to a healthcare practitioner who primarily used lifestyle changes, not medications, to treat my diabetes. She took my medical history and ordered a lot of lab work: Comprehensive Metabolic Panel, Lipid Panel, A1c, Thyroid Panel, Vitamin D, 25-Hydroxy, C-Reactive Protein, Cardiac, Vitamin B12, Insulin, Ferritin, Serum, Thyroid Peroxidase (TPO) Ab, Antithyroglobulin Ab, Tryiiodothyronine, Free, Serum Ab and based on those results a Gluten Sensitivity Stool Test.
The result of that last test led to a diagnosis of Non-Celiac Gluten Sensitivity (NCGS). I was...not happy...to put it mildly.
I had to give up gluten which meant for me at the time that I had to give up bread, crackers, and sugary muffins, scones, and cookies, and I didn't have anything to put my dollop of jam on each morning.
I had no idea how addictive sugar is. I was shaking. The sugar cravings were intense. Looking back now, some of my symptoms were likely due to "candida die off". After a week or more of that, I got in touch with the facilitator of the local gluten-free group. She hooked me up with a gluten-free baker. Sugar crisis resolved, but I'd fired my healthcare practitioner, and my diabetes would continue to worsen over the next four years.
I have to say, removing sugar, refined foods, and unhealthy oils from my diet two years ago was the hardest thing I've ever done, but the freedom from the feelings of seemingly unrelenting hunger - (beginning to think about what I was going to eat next within an hour and a half of eating) - is...wonderful. I [heart] LCKD. Healthy fats and vegetables are our friend.