Can I be claimed if I'm 24 I live with my mom..?

I pay for more than half of my expenses and I already submitted my tax return as not being able to be claimed before my mom. My return was accepted by the IRS. She has not submitted hers yet. But she seems to think I did something wrong. And now I'm scared that I am going to get in trouble. I was told I can't be claimed  at the age of 24. I don't know, I'm scared.