Wondering about ovulation day...

Hi everyone. This is only my 2nd month charting and I learned a lot the first month...I am def still green! I know Glow is a predicted O date and FF will eventually put crosshairs where they believe you ovulated. FF has me ovulating on CD 10. I’m not so sure...could it have been later based on CM and bbt? Last cycle was 28 days really standard but my chart was a disaster. I’m afraid I missed the window in believing FF! Any insight greatly appreciated (sorry if this is annoying)!