(((Shahope)))
Most often, we catastrophize and make things worse than they actually are... I do that.
When do you see your doctor again... perhaps he can give you some reassurance?
Also, there are meditations on YouTube by John Davisi. You might want to look up his channel.
Here is a quick 5-minute one:
And a longer one:
You can also go to InsightTimer, there are many guided meditations (Meg James is good) and also some in French.
Hope you feel better soon....
Visualization techniques about being healthy and strong might also help.
Let us know how you're doing...