Confused with BBT

Amber-Rose • Twenty-Nine. Married. 👩🏼 12/01/2015 🧒🏼 08/03/2017 👧🏼 03/02/2021
This is my second month charting and my chart looks way different and I had a .40 dip before a twenty or something rise, does that sound normal? I've been kind of in a slump this month and have only been charting because of being discouraged about not ovulating. So what do you think? Am I just getting my hopes up again this month?