My last period was march 6-10 & i had unprotected sex on my period march7 & he cum inside me will i get pregnant ?

Mar.7 too early, but: For fertile women who are having sex... it can be hard to guess if a woman is pregnant, because some of the symptoms seen in early pregnancy can also happen in non-pregnant women. A home urine pregnancy test gives a accurate result about 3 weeks after sex (3 weeks after when conception might have occurred), 1 week after missing a period, or 1 week after starting a "weird" period.