Okay so , me and my boyfriend had unprotected sex and he did ejaculate inside of me . I haven't been on my birth control pills for 3 days now . Today , I had cramps , a pinkish spotting , it would go away for an hour or two then come back . Several times it'll be brown or even clear like I've never even started spotting in the first place . I heard it could be possible that an implanation is happening ? Am I pregnant ?