Will doing this shorten my life expectancy?

I put a Styrofoam meat package in the microwave a few times. The only thing that really separated the pork from the Styrofoam meat tray was probably about one or two "meat sheets" that prevent the meat from sticking to the Styrofoam. Is this really bad? I don't think I put it in for too long. Just long enough so that I could separate the a piece of pork from the rest. Maybe a minute or two.