It sounds like you have a lot going on in your life! I can kind of relate, I am also a college student with a pretty messed up family. It can be really hard to balance everything! But you have to know you can't control what happens in your family. You are such a vital part of your family and I'm sure they want nothing more than for you to be happy. Your education is really important, because it will set you up for a really great life!! I don't know how it is at other schools, but at many around where I am from, colleges offer either really cheap or sometimes free mental health services. You can talk to a professional and get help!
I think since you recognize the anxiety and panic attacks, you have accepted it and are really looking to reduce the frequency of it. Which is AWESOME!! Embrace the positive in your life, ask for help when you need it, and know that you are so loved by so many.
Keep smiling!
PM me if you ever need anything.