Relax! Hopefully your instructors explained to you how the test works, so you know that at ANY point during the test, whether it's question 75 or 200, the computer can shut off because you passed. You have to establish a baseline of knowledge...so you didn't have it when you hit 75 questions. Hopefully, it shut off in the 80's because you made and sustained the baseline.
One other thing, just FYI...in NY, we have a website that you can access to check whether or not you are licensed. So after you take the NCLEX, you can go to the website and find out whether they issued you a license...usually within a few days after you take the test. Anyway, you should find out if you are able to do that, so you don't have to wait too long to get your results!! Good luck!!