On june 4th my boyfriend and i had swx, but our condom broke. When we realized we immediately went to walmart and purchased Take Action, an emergency contraceptive. And when i say immediately it was literally ten or fifteen minutes later. Anyway, i took the pill as soon as we got home. Flash forward to now and my period is almost four days late. I know morning after pills may cause thos, but im wondering if its also bc i am on birth control or if im pregnant? Has anyone else had their period be late after taking things like plan b? And how late was it? If appropriate, when should i take a test?