 [ Symptoms ] had unprotected sex about 2 weeks ago i am on birth control can i be pregnant  been on bc for about 4 months and now i am on placebo week if i do not get my period during this time would i be pregnant i have not had any symptoms of pregnancy whatsoever i mean i do not think i have [ Disease ] birth control pills are highly effective in preventing pregnancy so your chances are small i would advise against unprotected sex in the future however since condoms will add one additional layer of pregnancy protection and excellent protection against sexually transmitted diseases