So this morning, my partner and I just had sex without an condom at two in the morning (Feb 15), and before my period was begin to start coming in a little (light and brownish color). I'm usually on birth control but i'm now on the week with the sugar pills. i'll be picking up my prescription and starting a new month of birth control in 4 days ( Feb 19th). Do you think i'll be pregnant before i get my birth control or should get Plan B ASAP.