questions needs advise!

Jayde
My period is 16 days late and I have taken 2 pregnancy test. Both have come back negative. I don't know if I should call my doctors office and make an appointment or if I should just want to see if it comes or not. Also I have been under a lot of stress and changes in the last fewmonths or so but my period was always still fairly regular. Please any advise is great!