There seems to be some information missing from your question, such as who told you you will need to leave. It may be that DACA is an option for you prior to adjustment based upon the petition filed by your mother, or something such as cancellation of removal may be considered for you. Without greater detail it is difficult to give a firm answer beyond that you likely do have some options to explore.
Answered on Dec 09th, 2013 at 10:43 PM