I have a drug test question... they tested me for ecstasy and i ate marijuana.... i had no prior drug history?

If i jammed a small nugget of weed into the middle of a frozen burrito, then put it in the oven at 400 then let it bake for 10-15 minutes then i took it out and the weed had turned into the consistency of guacamole, then i at the whole burrito....... the burrito was a cheap re-fried bean burrito with not much else in it.... i ate it on wednesday and got drug tested today (monday) after school.... that would've been the 1st time i ever had weed in my system..... also i didn't feel ANY different after eating the burrito..... THANKS!