10 days late... and nothing??

I'm 10 days late with mild cramping and tiredness. But that's it. No nausea, no boobs hurting, etc.. I've tested 3xs throughout the 10 days and they are all negative. I've never been more then 2 days late in the 20 years I've had my period. I suppose I have to call the Dr and get a blood test to tell me what the other tests already are. Just annoyed more then anything....