Donna --
Absolutely!! It is sort of a magnified version of what I experienced after taking the Bar Exam in California in 1980. You take the test for 3 days in July, and in our case, the results came out December 16. Coming out of the test, you are exhausted, but confident. Then, as the days wear on you get a little doubt, but go about your life, and then as October and November creep around, the doubt and the anxiety increase daily, so that by the day before the results are announced, you KNOW you failed. ;-)
Same thing here. I have my next PET, next week, and visit to MO for normal follow-up and PET results the following week. in fact, now that I think of it, I just passed the 2 year anniversary of diagnosis. The anxiety for me will start about Wednesday of this week, and will ramp up until I have the scan, then go away, and ramp up again just before the results.
You are not alone!