There are questions ON the FAFSA form that determine whether you are independent for financial aid purposes or not for FAFSA purposes. One criteria is age…and you meet that criteria.
If you are so sure you made a mistake and you really need to be certain what you did was OK…you need to call the financial aid department at all of the colleges to which you applied and ask them if you are an independent student for financial aid purposes. They will tell you.
If the school uses only the FAFSA, it appears you are independent due to your age.
Just an FYI…if your parents pay any of your bills, you might need to include those money amounts on future FAFSA forms. @BelknapPoint @kelsmom can you explain this?