To sunMD....the best thing to do now is just relax and forget about it. You have 6 weeks to know whether your nerves or the jet lag got the best of you or not. As far as Philly not being good for CS, i feel it doesnt matter where an IMG takes the CS, i dont think they are biased....just a myth so ignore that.
I am an IMG and i took my CS in Philly back in March...i felt the same way when i left the testing center....i made a lot of minor mistakes in the encounter as well as the PN. But thankfully i passed, the last week of the 6 weeks waiting was the worst but it worked out for the best.
So again, just relax and forget about it. Work on whatever is next for you....cheers