I Am A Woman Who Just Turned 75. I Am

I am a woman who just turned 75. I am the soul care-giver od my husband who is about to turn 78. He has Alzheimers or dementia NOT quite sure of what it's called !! I am under extreme stress. He is very argumentative. He is ALWAYS looking for a fight.......which that pretty much could describes his normal
personality. He was a very HEAVY DRINKER since he was a teen.....about 15 years ago he started A.A.
I was THRILLED ABOUT IT. Sadly to say his personality hasn't changed. NOW, living with his alzheimers,
his constant QUESTIONS----actually, I believe I've become his MEMORY. I'm ONE person who have to almost THINK FOR TWO PEOPLE. As well, his SOUR personality had become almost impossible.....Could all of this be a contributing factor as to WHY I have A-FIB ? Thank you so very much, Marilyn Lively
as to WHY I HAVE A-FIB