OPK + Ovulation = Confusion

KearnsL23

So...I've been trying to figure out for months now.  I typically get a (+) on the OPK 2 days in a row.  Does anyone know if you get 2 (+)'s, what day do you actually ovulate?  I'm just trying to figure out when FF is going to say that I ovulated this month.

jshay778

Im thinking CD16.

KearnsL23

That's what I'm thinking, too, but sometimes FF does some crazy things.  Last month, I thought I O'd earlier than when they said I did.

traceandrob

Probably cd 16 but 17 could be a possibility as well. When i get 2 +s, i usually O the next day so in my case usually i would be 17. Wait for a few more temps and see, but id definitely think 16 or 17 for now.

JenyM

if tomorrow's temp stays up you'll get cross hairs prob on cd 16

SweetieD21

Once you get a + OPK, you will O 12-36 hrs later, so I'm sure it's possible to get two days of + OPKs.  It looks like you O'd on CD16, wait to see what tomorrow's temp is.

KearnsL23

Do you understand how they come up w/ the cross hairs?

JenyM

yeah. they look for a thermal shift. So, after your temps are elevated for 3 straight days, they look back on your lower temps and draw the horizontal line 0.1 higher then the highest of the last 6 lower temps. The vertical line will be the day before the 1st highest temp usually. there are tutorials on FF website.