How do you all personally cope with the "waiting game" after having important medical tests run?

I took my mom to get her cardiac stress test this morning, and there was a big, ugly looking spot on one of the pictures. Could be a bizarre camera blip, could be a blockage, could be, could be, could be….... Her doc has to consult the nuclear cardiologist before going over the results with her. I’m a bit of a mess, and she’s nervous.

When you, or loved ones have had important tests run and you’re waiting for results, how do you deal with the waiting period? Do you stay calm and just wait? Does your mind start going through different scenarios?