what is happening?!

Theresa • 👫🤰🏼💕😘
So I posted I think Friday that I was supposed to get my period. And I never did, it then said Sunday never did then it said today, never did and now it's saying Thursday?! I took a preggers test Monday and they both said negative? So I'm wondering if it was too early? I'll try again on Friday but I'm just so confused