I keep having this dream over and over again.

I fell asleep for only an hour which is really short for a dream to pop out but I've been dreaming about me getting cancer.
I still don't think I will get cancer but it is very common in my family. It's actually a long list
Both great great grandparents from my dad's side have it, my great grandfather had it and both my grandparents also and my dad died from it. Also my mom's side has alot of cancer too.
This is not a pity party.
I have had these dreams before, I just think it's fear because I used to get tested every 3 months to see if I have cancer but I haven't gotten tested in 4 years since my dad passed away...
I think it's just fear