Oh Sunny,I do feel for you. It is so easy for us to say "Don't worry - it may be nothing", but if you are a natural worrier then nothing will stop you. I hope you can find something to occupy your mind so you can switch off from it a bit, and have a bit of respite.
My auntie is going through a similar time, she has had a lot of health problems in the last year or so. The latest being that the hospital have discovered something on her lung, and they have decided to operate, even though they are not sure what it is, and because her health isn't so good at the moment it is going to be quite risky, so as you can imagine she is in absolute bits. The operation is next week. She is a natural born worrier too, and is convinced that it is something awful.........but, she has thought that on many occasions in the last year or so, and everytime it has turned out to be nothing bad. So I hope that is the case for you too.

Sending you some positive vibes and thinking of you.
Hugs, hugs and more hugs.

Loraine x