Late period, pregnant??

I'm going on 6 days late for my period. I have breast tenderness and cramps but I'm normally the type of person that does not get cramps. If I do get cramps it only lasts maybe 6 hours and I'm regular. My work load at work has doubled in the last month but I don't feel as stressed as much I have in the past. Any thoughts on if I should wait to take a pregnancy test another week? Or anything really?