Having a really bad day

I wish it could start over or that I stayed in bed.
My grandmother is currently at the neurologist with my mom. She went to the hospital yesterday b/c she's had bad headaches and been really tired. Well, they're 90-percent sure she has the beginning stages of Alzheimer's. THey started her on the drug that helps delay the severity immediately. I'm very close with my grandmother. She's gone through a lot in the past 10 years with heart problems, and most recently a staff infection that almost killed her...and now this. I just can't imagine a day when she doesn't recognize me or my grandfather (they're married 60 years). THen there's him...he has cancer. He's on a break from chemo and his numbers are low right now, but he doesn't think that he wants to go back on chemo b/c it makes him so sick. I know it's totally his decision, but I'm scared.
Then to top it all off, I'm fighting with MOH big time today. I won't go into the reasons here.
But I'm shot. My stomach is in knots.