I think that you should go for that oral glucose tolerance test. It will show where you 'stand'. It's scary but it's better to know.
Truly normal levels are much lower and when fasting will not have been influenced by any sweets you ate many hours before as they will have been digested.
What is Normal Blood Glucose
http://www.phlaunt.com/diabetes/16422495.php
You may find no problem, if there is one you need to do something about it.
Though a minority of people (10%) with T2 diabetes may be thin, they do tend to be older. However alcohol can contribute to the development of T2.
http://www.drinkaware.co.uk/check-the-f ... y/diabetes
We are not doctors and none of us know all your details so please take the next part as a personal experience and not a diagnosis.
Re tolerance to alcohol, mine was greatly reduced during the period leading up to my diagnosis with T1 diabetes . I could only drink a glass or so of wine without being sick, particularly on an empty stomach. However, it was not 'dry' retching.
My onset of T1 was slow, over a few years, not the fast onset that you read about in young children. I was actually in my 50s so not young at all. I have a form of T1 called LADA (latent autoimmune diabetes in adults)
People with LADA are more likely to have :
http://www.locallada.swan.ac.uk/faq.html
•Uncontrolled high blood sugars (hyperglycaemia) despite a healthy diet and oral agents (tablets used to treat diabetes).
•Evidence of other autoimmune diseases including thyroid disease and coeliacs.
•A family history of autoimmune disease.
•A lower BMI than a person with type 2 diabetes.
I had no family history of diabetes ,I was thin and did have a mother with another autoimmune disease and there can be an inherited predisposition to autoimmune disease.( I now also have autoimune thyroid disease, controlled with a tiny pill(
) )
If you did have diabetes of any sort, discovering it early means that you can control it early. It takes learning but is very 'doable' You can then have a full and active life, people with diabetes have climbed Everest, won Olympic gold medals and become a judge in the American Supreme Court (basically apart from a few things like flying an RAF plane, you can do anything)