Came in me

Okay so i had sex yesterday with my boyfriend and i let him cum in me(im on depo) i dont ever do this because my biggest fear is getting pregnant. Well anyways today when i woke up i was sitting eating and i can smell my vagina! I take 2-3 showers a day and i peed right after he did it and cleaned my self and even took a bath. Does this happen when u let a guy cum in you?