Ok so below are my charts/calendars for the two apps that I use regularly, I was supposed to start my period this past Saturday an as of this mornin still have not started. I took a hpt this morning with a negative resut, I have not been stressed and I don't know any other reason for me to miss a cycle or be this late. I am usually regular and start every 27-28 days, last two cycles prior to his one have only been for a day and lighter than normal, I am not on any birth control and have not been for about 6 months. I am slightly overweight and have been diagnosed with pcos but it has never been a problem. Any ideas on why I could be late or I I should take the test again later... All ideas/suggestions welcome. Thanks