When did i O?

Question

This might sound like a silly question but this is the first cycle I've used opks. The only day I was anywhere near close (same color as the control line but not darker) was CD 13. So my question is, how do I work out how many dpo I am?

Answer

If you get a positive OPK you will usually ovulate 12-36 hours after that so about a day and a half later. So example if you got a positive OPK on the 13th that means you might have ovulated on the 14th so you would start your count on the 15th. Hope this helps.

When did i O?

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