I understand your situtation....I did a dumb dumb just after graduating from college '95. I had a private license only. 97 got ratings and MEII then Good News....had a hard row to hoe but I did not give up. four years later from '95 I was an 121 FO four years 8 months later I was a Captain on a Saab and then CRJ Capt. Bad news is its be hard and by hard I mean I have not been successful YET at going to a National or Legacey because of boo boo. I have not even to date gotten so much as a speeding tic since 95 much less anything else.
About the sealing of your records as I have had it told to me air carriers now pull FBI records and they report everything right down to pooping in your pants in the third grade. due to the freedom of info act.
Alan Armstrong is a aviation lawyer in Atlanta you can get his number if you try. He is a awsome person in which to retain and ask question if you need legal help.
I know your will always have to anwser yes on your medicals because it says EVER. I hate that box!
Just do not give up know matter what ...No is just an opportunity to try again.... but if you get in trouble now with the ratings you have it will be the nail in the coffin because you now have to be responsible because you now know better .
You can out live your youthful woes but you'll have to start thinking before acting to be successful in the aviation bit.
kind of a mixed message but I mean well. I have seen lesser people go forward and me lag behind because I was a stupid kid one night and I have to live with it because i work in the industry were you are judged/ measured by what you've done wrong not by what you've done right....not bitter
any way live right, fly safe and everything will work out the way it's intended
good luck