Im starting to go on my 5th day late on my period and it’s usually right on time or a day or so off IF that! So i thought iv been very stressed out the past month, does anyone think this could be a cause of my period being late? I haven’t been sexually active since the end of October and had a normal period in November. I also have sisters that all came to my parents at the same time.. does anyone think im late because or cycles “synced”?