My first inadvertent whistle

[New AZ Ref]

I've had two inadvertent whistles so far.
(Knock on wood!)

1. Long run going away from me with two blockers ahead. Two defenders coming across the field. Defenders hit the offensive blockers and all go out of bounds. I blow the whistle and then see the runner still in bounds headed for the TD. White hat comes up and says he saw it, he was out of bounds (just backing me up). Worst part was I was on the offense's sideline and they were down 40-0 and they never did score during this game.

2. Sweep to my side on b's 20. I stay ahead and set up on the GL (I think!) Runner goes by and I blow my whistle and get ready to signal TD when I realize I am standing on 5. Luckily, they scored on the next play.

Both happened during first 3 weeks of the season on a Jr. High league.

I learned quickly not to blow my whistle until I was 110% sure the play had ended.