Im 17 years old, and have had my period since i was 11. I have been on birth control since i was 14, to help with cramping and pms. I have been on the same kind of birth control method for over1 .5 years, and i have only recently become sexually active. Me and my boyfriend ensure that we always are safe and use a condom, and he never enters me without a condom, so there is no pre-ejaculation.
My last period was at the beginning of november, and i didnt screw up my birth control at all, and i should of had my period on saturday, and its monday, and nothing. Should i be worried?