Had sex 3 times, 1 week before my period and he ejaculated inside but some leaked out, if i am pregnant will i still get my expected period next week

No: You do not get a period when you are pregnant. A period is the blood and tissue from the lining of the uterus that is not needed. Every month your uterus prepares for a pregnancy. When a pregnancy does not occur the blood and tissue comes out as your period as the uterus prepares again. If you become pregnant, this tissue/blood helps to support the growth of a pregnancy