Am I in trouble with the government ? serious question?

You probably will owe back some money and will not be in much trouble. I would consult H&R block and amend your tax return now. They can tell you what you should have paid or gotten back. Claiming more doesn't mean anything really, just because they don't take it out, doesn't mean you won't just have to pay it back later. You should only be claiming yourself and noone else. Regardless of if your parents claim you. 1. That is it.