Do you think I have a shot at getting into a decent college?

I'm a junior, I live in Maryland and I go to an all girls school with rigorous academics, and i take all honors cles. I work hard and I was diagnosed with dyslexia about a year ago, but I've been struggling with it ever since freshmen year, because the curriculum requires heavy reading, which was new for me. Anyway, because I didn't even know what was wrong with me I just gave up and my grades from sophmore year are abysmal.. This year I'm averaging at a 3.0. I'd say my entire high school gpa is around 2.9 or 3.0. My school doesn't weight our gpa's so my honors cles don't give me a boost at all, i would have like 3.4 if they did. I really want to go to the University of Mississippi because i have family down there, and i really like the school, but I'm not sure I can get in. Big schools don't take the time to take the weight off of everyones' gpa, so my 3.0 will just look sad next to this bloated gpa of someone who doesn't work as hard as i do. I haven't taken the SATs yet but on my psat i got s 490, which would be a 1490, thats not that great. So i'm concerned.. any input?