Can I Get an SAT/ACT Fee Waiver After Registering?

I signed up for the SAT/ACT like a normal student last month, but due to a series of unfortunate circumstances I now qualify for free lunch and thus SAT and ACT fee waivers. Am I essentially screwed out of the reduced price for these tests since I signed up before I knew I was eligible? Thanks for any help you can give me in this unfortunate situation

You can not apply a fee waiver or get a refund after the fact. The best you can do is use a fee waiver for a future test.