Pregnant from pre cum?used a condom it broke doesn't know if he pre cam did not cum\is it possible my period is late due to stress?i don't think i amp

He doesn't know?: Are you saying that your partner doesn't know whether he climaxed from sexual activity? That is usually quite evident to the man (and usually to his partner also). Some sperm are also secreted before climax, and the man would not necessarily be aware of this since it's part of rising sexual arousal. Your period can be late from stress, but if you miss your period by a week check pregnancy test.