Similar experiences?

Au

It feels weird being logged back into glow. Havent been here since 2015.. But I need your help guys! My period came on the 20th of last month, and as expected, its always routine. I expected the 18th, or the 19th for this month. Here I am, what feels like ages with nothing! I had tested yesterday morning, and bfn. And today, I just felt it coming. I had bad cramps and over all really hot. Felt it "coming" and rushed home to pee, and there was just thick cm. I had a bout of nausea on and off for the past few days, but I am chalking it up to having a head cold. no period, no signs. Nothing. Just wondering, has anyone else experienced this? I have had very regular periods up until now, since 2015 actually. Just want to see if anyone had similar experiences and what their outcomes were! Thanks for your time!