Just FYI, this never stops.
I recently discovered traffic tickets from 2012 & 2013 were misdemeanors in my state and I had to update my top choice acceptance school. I was so scared. I still haven't told my family the news (that I'm accepted) even though the school said I was fine after the update. I've even had a nagging thought about getting a false positive on a drug test and not being given a second chance to re-test (which is absurd), lol.
My family, friends, and coworkers all know me as the chillest guy ever (which I honestly am) but, since this whole process takes so long, I just have these random thoughts every so often that are ridiculous. On a normal timetable, I'm all good. But giving this process so long to establish mini what-ifs is just not beneficial, man.
But anyways, when those thoughts take root - just relax, play the fake confidence, and move on. You're in! Congrats!