Those are not dumb questions let me see if I can ease your mind.

1. There is NO WAY any significant amount of THC metabolites from your urine were left in the bottle after washing it out.

2. Urine is naturally mostly water. A little bit of water left in the bottle is not going to have any effect on the outcome.

3. I usually heat my samples in the microwave over 100 degrees. I have also left my sub bottles in a hot glove box for weeks on end. As long as there wasn't excessive exposure to direct sunlight or extreme temperatures (140+), you are going to be fine.

Relax and be sure to post your NEGATIVE results. Good job!