lol this isn't TMI...this is the usual for this board...at least IMHO...lol. either that or i'm totally inappropriate...lol. anyway, did the spotting only happen for one day? on 4 dpo? if so, I could be implantation bleeding.
The average implantation is 6dpo to 12dpo..but again, that's the average.
I have a friend that is expecting in October and she didn't know she was prego because she thought she got her period....so I would say her implantation bleed was later than 12dpo....just a thought.
BABY DUST your way....keep thinking positive.