Yeah, I'm guessing you screwed up trying to upload your picture, aye?
I've had that problem before, go to this link, then check the checkbox to remove your picture.
Refresh on "view profile" of your profile and you should see the EDIT link again.
By the way, for pictures, either they work or they don't, some people think that it takes a day to change, that is just BS.
This site is weird with the pictures, not saying its terrible, but there's room for improvement there for the maker of this site (Pet).
Convert your desired image to a .gif by opening it up as a file from somewhere (desktop) and clicking on "Save as" and change the file type to GIF image.
Then it should be fine to upload.