I don't know about dpo, I didn't consistently check cervix position or cm, usually I would do daily but I only did it on the days my chart shows and I used one OPK which wasn't positive I think on CD10, I have been ovulating CD12 recently but I have at 11dpo before so I don't know. I just went by temps but my sleep has been all over the place, especially earlier on in my cycle because of stress. So I guess it's possible. I have ovulated CD13 before, but it's usually CD12 although the app puts me at CD11 for ovulation based mostly on temps. I just haven't been consistent this cycle.
I think though, if I am 11dpo, this is as far as I have got with lines as they usually disappear by now