What do I do...? I'm driving myself crazy!?

i understand what u are saying. I used to think about the same things too. I used to worry about my grandma, brother or sister getting hurt, or possibly dying. i had real issues with my family based on the things that had happened to me and used to take the stress out on the ones i really loved. try spending more time with your siblings or the ones you really love and show them that you love them and cheer them up when their mad or sad. I had a problem with showing my grandma and my brother that i loved them...the night before my grandma died we had an argument and i said that i hated her...after i find out she was killed the next day i was devastated...i used to give her hell and didn't spend enough time with her...now im living in shame because i wish i could do it all over again...and that's the worse feeling of all...so spend time with your family show them that u care and tell them u love them as much as you can because if u do what i did you will be living in sorrow