No I'm not on birth control but I understand what you're saying. I think it might have been just the timing because it's been about a week now and everything is back to normal for the most part however I still get white discharge.
are you taking any kind of birth control? even though the guy pulled out doesnt mean your safe (not trying to scare you) but males do get a "pre ***" if you have ever noticed, when playing with a guy that some liqueds do come out while playing with his junk then thats what it is. how ever, women do get a white discarge some times its perfectly notmal and the brown color is most likely just because it was the first day once your period was over. so its probably just a mixture of the remanding period and the white discharge.
which does not mean your pregnant.
dont freak yourself out about it and wait to see when your next period arrives