When did I ovulate?

I'm trying to figure out when it looks like 1

ovulated, since my period can vary by a

week. Glow is guessing my period is late

just by my average cycles. My smart watch

takes my bbt every night, and is guessing I

didn' t ovulate until 2/24 so period isn't due

yet. Yesterday & today I've had light

spotting-light pinkish brown mainly, and

nce a bit of dark red. Does this mean my

period is coming and my bbt isn't lining

up? Or am 1 reading the chart wrong? Or

possibly implantation bleeding? I never had

implantation bleeding with my 2 pregnancies. Thanks for any help!