###Human: Can missed period after sexual intercourse mean pregnancy? ###Assistant: Hi. How are you doing? For a young lady the only way to check for your chance of pregnancy is blood test. Lady can have a bleeding vaginally, when their hymen memberane rupture. Clinically we see bleeding, which can be mild spotting to heavy bleeding. As you mentioned that you have irregular cycles, exact date of ovulation cannot be guaranteed. Simple way out is 15-20 days after the sexual contact have a serum beta hCG test. Even the earliest of pregnancy can be detected.  As you had used condom, chance of pregnancy is low. But blood test is confirmatory.