After I had my tests done my doctor said she would call if anything didn't look right, she never called. And at my next appointment she showed me my labs andsaid that all my tests came back negative. So I wouldnt worry girl:)
If there is anything that concerns the doctors after the tests, they will let you know usually with both a letter and phone call. If you havent heard after a few days - a week, id say you are pretty safe :) but if you need the reassurance sooner, then call :)