I am 2 weeks late and I have never been more than a day early or late for my period I have taken two pregnancy tests each right after I have woken up and they have both been negative, I'm very concerend and would like to know why my period is this late if the tests have been negative

Sometimes we all have months that are just off for no apparent reason. Or sometimes stuff like stress or changes in eating habits and exercise can delay periods. The only way to find out for sure though would be to talk with your doctor.

It could also be that it was too early to test. You could wait until your next period is due. If you also skip that period try retesting or see your doctor for a blood test.