Not that the preparation for the exam didn't suck, the waiting for the results was the hardest part by far.
4 years ago, I think my feelings post exam were, I thought I did very well in the am. I only had to truly guess on maybe 3-4, I finished about 1 hour early so all the problems I knew how to work I had time to review.
The afternoon that number was more like 6-7 and I didn't have much time to spare.
I passed the first time, but by the time the results came out I was truly feeling I wouldn't be surprised with either a pass or fail result, because as engineers I think you tend to harp on the mistakes you made and not to remember all the stuff you got right.
Luckily for me the State of Washington had started to allow the results to be emailed, so I got them about a week before the 4th of July camping trip I had planned, while some of my buddies had to wait weeks into July for Oregon to send them a letter.