When do you think I ovulated?

Alyssa
I posted my temps typed and I posted a picture, I truly need opinions! TIA :)
Also if I did O on CD 12, is it good my temps are gradually rising?!
CD 8: 97.4
CD 9: 97.2
CD 10: 97.0
CD 11: 97.2
CD 12: 96.6
CD 13: 97.2
CD14: 97.2
CD15: 97.4
CD 16: 97.2
CD 17: 97.2
CD 18: didn't record
CD 19: 97.4
CD 20: 97.7
CD 21: 97.7
I think 19, what do you think?! TIA

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