Ditto what Joella said. Take good care of Sheila, too. Telling you not to stress is easy - not stressing downright impossible, I'm sure. I don't know if losing your life's mate is any easier when it's sudden and unexpected like mine was, or the every day wondering when will be the last. Either way, it ain't easy, my friend. I'd say just feel blessed with each day that is a gift. I try to remember all those gifted days we had for years.
I wish we could all have a giant Sheila hug in person, too.