Dot
I went to the doctor for this a few years ago in my 50's and he said I was experiencing anxiety attacks. Of course worrying about it made it worse and you think there is something awfully wrong. You need to talk to the doctor about it. It can be simply rectified. I believe I took something to calm me down maybe at night and then it went away and I have never been bothered since. People who worry about everything experience this also.