My Family Continues To Deteriorate

I found out within the last few months that my dad has had a few strokes.  He's having more and more trouble doing things on his own, like cooking or changing the channel on TV.  Today it seems like he's now unable to really tell time.
To make matters worse, last night my mom thought she was having a heart attack.  She decided not to go to the hospital because she wanted to make it to her doctor's appointment today.  The doctor found that her blood pressure was very high and prescribed her medication to treat it.  We are still unsure as to whether or not she had a heart attack because she could not lie down during her EKG.  I guess lying down during the test allows for more accurate test results.
I can't handle everything our family is going through.  I still live with my parents and am still very dependant on them.  I don't want to be.  But I fear what will happen to me and my brother if my parents were to die soon.