Pap smear re-visited

So, I got the results from a pap smear and they didn't say anything in particular. They said I had to come back and do it again in 6 months because something about changing cells or sumthing. Does anyone know what the hell changing cells are, are they something I should be worried about?

okay well...pap smears are important because they can detect cancer of the uterine cervix or precancerous conditions - abnormalities of the cervix that may lead to cancer
usually you only need to have one every 2 years but if you need to go back after 6 months they might have dectected something wrong
try not to worry about it too much, but youll find out the results when you go back