I have been on birth control over 3 years now and i always seem to miss a couple of pills..but in the last 2 weeks i missed a whole 6 days straight and have had unprotected sex but then all of a sudden i started bleeding and it has been coming and going and now i think it has finally done but is there a chance i might be pergnant..for some reason i have had this strange feeling like i need to protect myself almost like there is something in me that i need to protect could i be pergnant?