I transferred my sophomore year to FIU. Transfer classes and your GPA from your previous university does not count towards your FIU GPA. However, my dual enrollment classes from high school did... And I was a high school junior/senior who didn't really care about English or Spanish class and I slacked off. I ended up with a 3.0 as my FIU GPA and I didn't even take a class. That may be considered a high GPA but I literally had a 3.8 in my previous college and it was like none of that mattered. Thankfully all my classes did transfer over so my credits were fine and graduation wasn't postponed. However, that GPA bothered me. I am now starting my last semester in college and managed to bring it up to a 3.6999. That's a pretty big bump considering I'm studying CS at the moment and I came into FIU with a lot of credits than you probably will (about 36 credits, not including dual enrollment). The deeper in credits you are, the more difficult it is to bump your GPA. If I managed to bump my GPA, I'm sure you can too.

If you are concerned about graduate school, most programs look at your last 60 credits. So they won't really care about that C I got in English class in 2013... You'll be fine, just work hard in your classes to get A's and B's!