my GF usually get her peirod days evry mnth 23rd. me and my GF had sex on 9th of dec..without using condom..and NO protection. at all .she got bleeding while having sex..she is worried bec of delay in menstruation.but during sex only twice i have injected and cum is not released. still now i didnt let her to take medical test. please help me out .whether any pregnancy alert....please help me..