I Got Kicked Out of Army but I Never Pissed Hot Can They Do That?

Ok I was a pretty good soldier. I was respectfully and all the other hooah bs. I unfortunately got caught up with the wrong crowd and CID called me in and asked me have I used any drugs in the army? I thought I would be honest which is one of the 7 army core values and I said I did. I told them I used cocaine big mistake but I havent done it since then. My old unit was crazy about drug tests and I took 14 within my first 5 months of being there. I was never told I pissed hot and CID told me I never pissed hot or I would have a flag by my name which I didnt. I ended up getting kicked out for drug abuse but I never pissed hot. So if I say I killed 20 people are they going to arrest me for murder or something? I was never offered the drug rehabilitation program and even though I was getting kicked out I was still worked my ass off! I tried to reenlist but the army recruiter told me to get it waived since there is no record of me pissing hot how would I go about getting my code 4 waived