bees in february?!

what!? yes, it's true. we had bees in the house.
shaun had noticed a bee in the office on sunday, but was unable to find it to get rid of it. then yesterday, we were sitting in the office before taking shaun to work, when we noticed the bee again. shaun took care of him. then less than 20 minutes later, we saw another one. shaun took care of him and then we did "clean-up." we decided that we had to try and figure out what was going on, and where all the bees were coming from. so, shaun called in to work and let them know that he wouldn't be in, i informed my teachers that i might not make it, and we went to work. we took the office apart, and tried to find them. we looked in the basement, we checked outside (quite a cold, wet job), we went into the attic. we couldnt' find anything!! the bad news is we have no idea where the nest is, and the good news is, we haven't see any more bees.