Hi rain,
Yes I've had this thought in the past.
And I would sit and google every possible symptom and self diagnose myself according to what Google said I must have.
It wasn't really healthy for me to do to be very honest.
I worried and obsessed about every little thing.
My personal advice is, if you think perhaps you are suffering from something, please see a medical practioner to put your mind at ease or give you some clarity.
I understand this thinking.
Because I have honestly done this too.
It is not very good for us.
I hope you are able to find some peace.