I haven't eaten meat in years, I am a vegetarian, or more strictly, I'm a vegan
That's cool. What made you go vegan?  
Meat is digusting, and causes many health problems.  I am a dietary vegan because I don't eat any animal products at all, including eggs and dairy.
So, if I eat no meat but I eat lots of fish...I am a vegan and I didn't know it?  What health problems?
No, as a vegan you wouldn't have any animal products whatsoever, but that is only if you care about your health.  Meat increases rates of cancer, diabetes, skin problems, and organ issues.