Hi AK and welcome back!
Although I am sorry to hear of your current concern. It is really easy to get worried when we hear of tragedy/health issues that hit close to home.
Here is an illustration that really helped me to not identify with every story that came my way.
If a friend, or friend if a friend won the lottery...would you automatically assume you were going to be next? Quit your job...shop for mansions and a yacht...book lavish vacations? Of course not...because that's not likely to happen to you , just because it happened to them...
You see where this is going.;)
Use your positive/rational thinking and mantras...as well as other coping skills to get you through this challenge.
...and I hope you have a joyful and stress free as possible holiday!
Peace and progress,
S.C.