Dropped bike, strange behavior, weird noises

I was riding today when I stopped at a local store about 3 miles away from my house. When I stopped, I tried to kick the stand down but my foot got caught or something and the bike started to lean over. I've never dropped it before and I caught it before it hit the ground. I was holding it up, but it was way too far over to pull back up so I tried as gently as I could to lay it down.

Everything was very gentle and I pulled the bike back up and I couldn't see any scratches or anything. As far as dropping it goes, it seems like it went pretty well. So, without thinking of the condition of the engine I went in and bought a few pieces of hardware I needed and came back out. But when I tried to start the bike again it was really tring hard but wouldn't turn over or whatever. Eventually I could feel it "catching" so I gave it some gas and it started well but when I let off it just died again. So I put on the choke and started it again but the same thing was happening so I had to keep giving it some throttle until after about 10 seconds it started to warm or something and caught again.

Everything seemed OK when I headed back home except for it starting to rain but when I slowed to a stop light, I could hear that the bike was acting like the clutch wasn't in even though the lever was fully depressed (the actual lever didn't touch the ground when I dropped it). It died when I came to a stop. I started it up again with the same technique as at the store but now it sounded all gutteral and low like a big cruiser! I looked and all the parts were still there but it just sounded like there was no muffling going on whatsoever. When I took off it felt extremely underpowered and I had to rev it pretty high just to take off.

So now I'm home, soaking wet, with a sore back and a weird bike... Anybody know what's wrong?

Thanks in advance