Ttc with Bbt chart... how to read it

Jessica • PCOS - 👼🏻(Miscarriage Apr2018) Expecting Identical Twins 👶🏻👶🏻 April 27th, 2019

Hey. I just started tracking my bbt and do not understand what I should be looking for. This is my chart so far. Does anyone see anything? What should I be looking for?