help- 3 days late... temp all over but high, neg preg test

Iris • Works at a Women's Prison, married, bi-sexual, and all about being happy
Okay ladies, I'm 3 days late for my period... I took a Preggo test yesterday and no second line... so when looking at my charts... my BBT is normally low, now highish... WTF, when should I test again? Or am I dreaming and there's no way