Glow says fertile-w from7-13had sex on the 4th is there a chance of pregnancy.now my nipples are sore to touch n if u squeeze them looks like milk ?

Yes, a small chance: 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 possible conception), or 1 week after missing a period. Life is not exact, and ovulation is sometimes earlier, sometimes later.