Hey sissy (:
Welcome to the forum. It's okay to be scared - Lupus is a scary diagnosis. The important thing to realize is that it's NOT a death sentence. So many people get diagnosed, and go through life thinking that they're going to die soon. But they're not, and most of the time they will live a long life and can get this disease and sickness under control.
I am new to this world as well - I haven't even been sick a year now. I'm still waiting on a diagnosis, however, so while I can talk to you (and would love to), about being sick and coping, and what I know, I'm nowhere near the expert that so many on our site are.
You are not alone, not in being sick, not in having Lupus, and not in being scared or over your head. That's why this forum is here - to bring people together and help comfort eachother.
I know you're probably overwhelmed right now, so there's not much I can say, but trust me, it will get easier. That weight on your chest and mind will get lighter, and as you progress and time goes on, you'll establish a new sort of normal. (:
Well, anyways, I'll step aside and let the *real* experts talk, hehe. If you ever need to chat though, feel free to message me.
Best of love and luck - just try to breathe through it, try not to be too terrified, you really needn't be.