can i start my pill?

[tinydancer7.livejournal.com]

i got my period yesterday. i was told by the gynocolgist to start taking my pill the sunday after i got my period. so, i guess that would be tomorrow.
but my period has pretty much STOPPED for today. i had it yesterday; but it's totally gone now. i don't understand what happened. i've never had a one-day period.
can i still start my pill tomorrow?

x-posted to birthcontrol