Pleurisy

I think I had Side Pleurisy for about a week and a half. But by the time I finally got to the doctor, it had disappeared.
My doctor thinks I may have bone cancer because of somethink they saw on a CT scan when I was in the hospital 2 years ago. I refused to have a bone scan at the time, because I had so much stuff going wrong with me at the time I was scared half to death, and I thought what could they do about it if I did have bone cancer in my condition. The other day, the doctor took some  blood test and urine samples that she said my telll her something.Then the next day, after I came back from the doctor, I was watching TV and suddenly I blacked out. When everything came back it seemed to spark, and my heart was pounding. What do ya'll think? I've got another doctors appoitment today. I've had a few dizzy spells since my black out. I'm scared.