I wouldn't say it was an early PG symptom. I used to get a vag pain like shooting pain a week or so before AF, but this time I didn't get it like normally do this BFP cycle....but I've been getting it now since like 8 weeks or something. :-( Not fun...but not that bad.
I don't recall if it was an early or phantom symptom, but I've gotten it a few times since my BFP. It's definitely... weird. I assume this is what I've seen some girls on 1st Tri refer to as "lightning crotch." It's just sort of these sharp, shooting twinges that feel like they should be happening in your lower abdomen, but are instead a bit farther south.
Re: Vag pain