Had unprotected sex a few times. i have irregular periods. having light cramping and light pink, watering discharge. what do you think this is?

Hard to guess: It can be hard to tell if a woman is pregnant because some of the symptoms seen in early pregnancy can also happen in non-pregnant women. A urine pregnancy test gives a reliable result if done correctly. One can test about 3 weeks after sex (3 weeks after when conception might have occurred). An Ob-Gyn doctor can check persistent or worrisome symptoms for an STD (sexually transmitted disease).