Yep you could have damaged one of, or just many things. So hard to tell without taking it in and letting a technician see what it is. The connectors on the phone are generally hard to dislodge without some kind of excessive force ( like throwing it against the wall in a fit of anger), which will usually crack the screen. As long as it's just the screen, or screen assembly you can get it repaired at many places, and you can even have the color changed from Black or White to all kinds of colors, patterns etc. (like the picture attached to this reply)
You can get it repaired for under $199 at a good repair shop instead of paying $199 at Apple. Apple also does this thing when you bring in your damaged Apple products, it's called voiding your Applecare ( if you paid for it). So if you want the new iPhone 5 then trade up its around $200 with some carriers. If you want to fix it. I'd say you can get it repaired from $100- $160 depending on where you decide to get it fixed at.
Good luck.