I'm 16 and me and my boyfriend had unprotected sex last tuesday night (Aug 30). He pulled out before his release and was sure that none got in my vagina (withdrawal method). I wasn't quite convinced and started taking "Lady" emergency contraceptive pill. It contains levonorgestrel and ethinyl estradiole. It's my first time so I wanna ask if it's okay even if I start taking it even when I'm not on my period yet? I'm on the fourth pill tonight am I safe from pregnancy? Thank you.