I can't figure out how to get rid of the dead bodies. I reload and everything and they stay there. How to get rid of them?
Sometimes Skyrim doesn't delete dead bodies (or it takes an unreasonable amount of time). I for one had a dead troll at Whiterun's Gate that I didn't even kill and he stayed there for almost a whole game month.
If you are playing on PC, you can use the console to manually delete the corpses. To do that you have to enter in the console, and click on the corpse you want to delete. Then
markfordelete - Which marks the target to be deleted upon the next load
disable - Which removes the character from vision (but it still loads it, you just cannot see it. But if you
markfordeletefirst, the target will then be invisible and then deleted.
Alternatively you can use mods to similar effects. There are a few mods at nexusmods.com which is generally a reputable source for several mods of different games. However, you should always scan every file for safety purposes.
Dead bodies usually despawn after a while. There were some bodies in river wood and after a while when I went back they had despawned so no worries. Just wait a little bit. If it really bothers you, you can just drag the bodies away somewhere where you won't see them. (To drag bodies or pick up object without moving them into your inventory hold the A button where it says search)