Lori is right, we are all a bunch of POAS'aholocis - that's why we love our $ stores! Were you tracking your cycle, so that you are positive of your O day? It could be that you O'd later then what you thought.
I wouldn't be able to resist testing, go for it!!
BradyAM, I would test again, but we're known around here as POAS'aholics! LOL Hopefully you'll get a BFP this time. Let me know!
Lori