BBT charting

Cheyenne • Momma of two angel babies 2/1/18 👼🏻 2/3/19 & a sweet girl 12/15/19 👶🏼

I’ve never had a chart like this, particularly that my temp has been the same for so long. I’m pretty sure I ovulated May 1 and my chart is a bit off because of that. Any thoughts?