The amount of time your talking about would not make a huge difference in temp. Secondly to them , this "going number 2" is a well known dodge to destroy a urine sample. All of this to say you are screwed unless you get them to draw blood to prove you're clean. My PM doc is no joke you better have the correct levels, no nicotine (not a problem as I don't drink or smoke) and NO alcohol. I would call them or go there and tell them to draw blood. They have suspicion of wrong doing so, get it cleared up. You have to do it soon, or it will be to late for whatever they suspect you of. Gould luck.