Is it a blood test?

Also what type is more common 1 or 2?

And lastly i heard people who have diabetes can not have children because it is very risky.

Lately I’ve found myself urinating quite often, very thristy, and feeling very nauseated when I have eaten something in a few hours. Could this possibly be symptoms of diabetes?

Diabetes does run in the family and I just found out that two more relatives were diagnosed. They are much older though, I’m only 23. I’m hoping that I am just being paranoid.

What are the symptoms and what can I do to make sure I don’t get them if at all possible?