Debi,
Your life and your emotions are on a roller coaster. It is not surprising that you have your ups and downs. This is small comfort, but none of us knows how much time we have on this earth. We all have a limited amount of time, but most of the time we don't think about it at all. The only thing good I can think of about being confronted with a terminal illness is that it gives you time to build memories and say your goodbyes. I didn't have that. My husband of 45 years had a stroke one morning and in the blink of an eye he was gone.
I think about you every day. The only thing I know for sure is that it is vitally important that you take care of yourself as best you can so you have the strength to get through the day.