You must realize that if your parents are eligible to claim you—even if they did not— you must check the box saying that someone else can claim you. In that case, you would not get the stimulus. If they can claim you and you did not check that box you would get the stimulus but would have filed a fraudulent return. If they are not eligible to claim you there’s no problem with your getting the stimulus.
I filed my taxes as a dependent before they told me they would not be claiming me. So I had to go back and amend my taxes as an independent. I was wondering if I would be issued the stimulus after ammending.