I am 19 years old and i just finished my period yesterday (12/20/07) afternoon. I am on YAZ birth control and usually my period doesn't start till the third or even fourth white pill so i sometimes delay to start a new thing. I have had sex without birth control the night my period stopped (unprotected) and tonight my breasts started lactating white liquid. i havent started another round of YAZ yet. i am not sure if this means i am pregnant or what?? please help asap.