Taxes,marriage,and dependents?

Ok long story kinda.......I turned 18 in jan. I live have lived with my mom this whole year I only made 2800 the whole year.......I got married in sept and we still live with my mom.......She is wanting to claim me on her taxes.......So should she claim me and me still file jointly or can we even file jointly since we got married in sept its all so frustrating PLEASE HELP