Hi

I had a pet scan recently. Nothing to be scared of, it doesn't hurt as all they do is inject a radioactive dye that shows on the scan any areas that the consultant wants to check out in more detail.

For me it was to see if i had cancer anywhere else in my body other than my right tonsil...

MRI and CT are not as productive in giving the full picture. It could be anything showing on your routine scan and to keep you safe they want to do a PET scan which will rule out other things... 

Worrying is normal but see it as a posative and that they are keeping you safe.. I think after any cancer treatment hospitals will take more care and double check everything

My fingers are crossed for you, let me know how you get on 

Julie x