I submitted my fafsa months before the semester starts

A check was mailed to you or money was deposited in a bank account of yours based on a FAFSA that you completed? That’s not the way FAFSA-determined financial aid usually works – typically your school will receive the funds and your school account will be credited. What kind of “financial aid money” did you receive? A Pell grant? Federal direct loans? A state grant? Something else? More details needed.