I have delayed menstruation for 3months i'm irregular. i had sex with my partner and after that i did have my period. and now im delayed for 3months. im a female im 20 yrs/old is it possible to get pregnant?

Missed periods: If your partner is male and you had unprotected vaginal intercourse, it is a possibility that you are pregnant. Or it is possible that you may have oligomenorrhea. In order to determine pregnancy, you need to do a pregnancy test. You can buy OTC pregnancy test. Also, consider scheduling a visit to an obgyn/ women's health physician. In the meantime, get a menstrual calendar and track your periods.