Investigation for both lower GI and ovarian cancer

I went to see my GP as I had blood in my poo, I had bloods done that day and did a fit test 

 next day. 
bloods came back with raised CA125 levels , bone profile,serum C reactive protein, also raised  so I have to undergo a pelvic ultrasound.

then my fit can back with >200 and now have to go through a colonoscopy as well. 
I suffer bad with CPTSD and am really struggling with the thought of these tests. 
is there any advise you can give me to help male all this a lot easier

oh and I found this out with test message from my doctor with a link to a cancer page.