I failed my 1st and only drug screen, 3 months ago. He hasn't filed a violation as he said he was waitng for money paid to be posted. ( which is all paid in full ) My next office vist is in 3 days. Prbation is suppose to end in 4 days. Will I get violated on my last day ?

I assume that would be left to the discretion of I assume, your probation officer. They might cut you some slack, or retest you and decide, so hope you are preparing for that event.