I definitely had RL pain straight out the gate. In fact, even though we were TTC, I kept thinking it was just weird menstrual cramps for a long time - and after I tested and found out I was pg, it took me a while to wrap my head around it! So I certainly think it's possible. We used OPKs, too, but I can't remember the exact dates. Still, I know I had them for several days before my BFP (which came when AF was a couple days late) - and for the rest of the pregnancy after.
~ Lucky wife of DH and loving mama to DS (04/11) ~
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