Missed period

Kristina • Blessed Momma to Aiden Joseph 💙❤️💙❤️
Ok so I am 30yrs old and never missed a period in my life. I have had them come late by 2 days or so a few times but never missed one. I have taken 1 pregnancy test and sits negative. I do plan to test again but I am just wondering if anyone out there has ever just missed a period for no reason to have it resume the following month?