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April 29th, 2012, 08:22 AM
Servilia Servilia is offline
Platinum Supermommy
Join Date: Aug 2008
Posts: 10,798
I'm sorry for your recent loss.
I would say that as long as you were testing properly with the OPKs (ie not with diluted pee, etc) I would go with the OPK. CM and temps can be influenced by other factors but hormone levels are the most objective measure I would say. If your OPKs were negative until day 17, there's no way you ovulated before then. I would say day 17 or 18.
I've done cycle monitoring at the RE's while monitoring my own signs and I have to say that temps can be off by a couple of days, same with CM. It's only the OPK that consistently matched up with findings at my RE's (blood work and ultrasound).

Good luck hon!
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