Late...

So I talked to my doctor and she wasnt concerned. But i am and I'm waiting to hear back from my insurance on where else i can go to see a new doctor. I am currently 10 days late and have no symptoms. I have had my period come the same Tuesday of ever month for the past 4 years that I have taken birth control. They say that stress and weight contribute to a missed or late period, but I have been overweight for over a year now, and stress well I am a junior in college with a heavy major so I am constantly stressed. I have taken two home test and they are both negative.. has anyone experienced this? Because I have looked through the posts and most are only a few days late.. or have irregular periods. I'm at the point where I'm giving up and just waiting for my period next month.