I don't know if I have a warning, and I don't get an e-mail when I do, last time I was banned I didn't. Is there a way to know how many warnings I have?
Have you set up the widgets?

Go to the main page, and either have a look at, or set up your criminal status widget. That will tell you if you have a warning or not.

Ot else, go to this, and take note of the email listed. Then go to this page and make sure you have the option ticked to receive email from administrators. Then, log into the listed email account, and check both your regular and spam inbox for any correspondance from UG.

If you are still unsure, wait, and a mod that sees this thread may have a look for you.