I'm worried about my dad dying?

Hun ithink you need to tell your dad how your feeling. Let him know about your reactions. It might not mean he just up and quit his job but i think it wiould be good for you or you both to get some family counseling. It's sounds like your having a Fear of abandonment problem. Especially since were came from a hard home before they adopted you. I really think you should tell him I'm sure he would want to know and help you through it. :) Try to slow and control your breathing when you start to have those attacks...but it won't just go away...talk him and i really turly believe grief counseling or family counseling sessions would help you a lot. Try to hang in there kiddo! :)