Confused.. please answer.

Samantha • TTC baby #3 (1st planned)

So according to Glow, because of my last period, I'm now on a 25 day cycle... I've had a 28 day cycle for years.. just 1 period the it off...with that being said here's my question;

I got my first positive opk on the 14th so how many days after ovulation should af arrive? Or is there no particular timeline?

I just don't want to some myself out basing af on the 28th and then for her to show up on the 31st or nov 1st.

Thanks in advance