Still no period and took dollar tests and all negative what could be causing this. 4 days late

Last month I was a week late but af showed up. My friend had the same problem along with a coworker. So maybe it’s just wanting to be late? Sending baby dust your way!!

It could be stress Iv had a stressful month this past month

It could be stress. When I first went away to college I went 2 months without a period.

Ovulating later than usual can cause it

Well this morning I tho ght I was on my period having those cramps and went to go to the bathroom there was a little brown but that was itn