Curse of the "Threes"

Have you ever heard of bad things happening in threes?
I'm afraid bad thing number three is going to happen soon.
1. Peanut passed away.
2. Husband's best friend's grandpa passed away.
3. My best friend in the whole entire universe may have something wrong health-wise.

She went to the doctor about strep throat and asked about something that has been sitting on her mind. They ran some blood work and the according to the doctor, the two things that could be wrong are both bad. I don't want to say what it is until she has heard for sure but I am very worried.

I don't want anything to happen to her. She is the only other person, besides family, that understand "how I am". She knows when I say something that comes across as rude, that I didn't mean it that way. I have a hard time finding the right words most of the time. I have to stop and think about what I'm going to say so that it comes out right. She knows this. She gets this. I can't talk to anyone else like I can to her.

When she called me and told me what the doctor had said, I got scared. We're not talking about the flu, but something much more serious and long term. Possible life threatening.

I"m scared. I don't want anything else bad to happen.
Please God, help my friend.