When is O day? Can you look at my chart?

[purplite]

Can someone help interpret my chart. FF says I Oed CD 18 but Ovufriend says CD 19

https://www.fertilityfriend.com/home/46c5df

I assume FF is saying that because of the temp rise, but I got a negative OPK the morning of CD 18 with FMU, blaring positive at 11am and 5pm and then negative CD 9 in the morning from there on. Cervix was SHOW on CD 16-19 though even the night of CD 19. Plus lots of my old temps were the same as the temp I got CD 18, but the one on CD 19 is higher than all the rest. Maybe I Oed in the middle of the night CD 18 so my temp started to rise a little bit come morning of CD 19?

Thoughts? I want to know when to test but don't know if I'm CD 8 or 9.

 

[purplite]

Bump

 

[MrsWKJ]

Doesn't matter when you got your positive opk on CD 18. Some ladies OV just after their LH surge if you got your first positive at 11am CD 18 , you must've have ovulated late night of 18th may be or early 19th. There's a clear temp shift after 19 so that puts you on 9dpo.

 

[pink_kitty]

Looks like cd19 to me based on your higher temps beginning on cd20