Please help me guys 😌sorry for TMI 🙊🙈I am confused

I have been ttc#1 since 3 years. Usually I have 29 days cycle and I used to ovulate on cd15-cd16. but last month I had a 36 days cycle in past 1 year. It was delayed for 7 days and what I observed was some ewcm(egg white cm) on cd11 and some on cd24.

So I am kinda confused when did I exactly ovulated last month. I BDed mostly from cd11 till cd21.

Did anyone experience something like this? Is this normal?

In the below picture left side is from cd11 and right side is from cd24