Ovulation Day changed all of a sudden!

Jean • 👼 May 2015 (Ectopic 6 weeks), 🌈 👶 April 2017, 👼 June 2018 (MC 7 weeks), 👼 November 2018 (Chemical), 💕 Expecting #2 September 2019
I've been ovulating in cd13 for the past 6 months but all of a sudden I didn't! I'm on cd14 and still no O. Has anyone had this happen to them? When did you eventually ovulate?