Well this thread took another interesting turn while I was at my matinee.
Let's be very clear on something. For your entire life, people are going to assume things about you. People you know are going to assume things about you. If people you know are gonna do it (which, and I cannot repeat/stress this enough, they are), then how much more do you think strangers on the internet are going to? If those things aren't true, then great for you. But even more importantly...why do you care? Especially on an anonymous board, who the heck cares what people you don't even know think? If you're really telling the truth, then what do you care what a bunch of, as you say, strangers think?
Like Jordan said, a good life tip is to stop caring what other people say/think. Especially strangers on an anonymous board. One thing I'll add, however, is that taking the "say what you want, I don't care" attitude will make people more apt to believe your story. Much more so than if you get all defensive.