I finished my birth control on Saturday and sunday had no period. Last month was the first month I ever used birth control and after i finished the hormones my period came a week earlier than my period calculator said it would. But this time I decided not to take my sugar pills . I have still not gotten my period. But I had unprotected sex with my husband last night. Am I at risk of getting pregnant since I haven't had any hormones in now 3 days?