Please help!

Hey guys! Just wanna ask something. Cause i've been really sexually active this month with the same guy. And my period is late for almost two weeks. I just want to know if i'm pregnant or not. He's always cum inside me. And he's the only one who cums inside my vagina. And when i look at the mirror it looks like my breast is a little bit bigger than before. I feel dizzy, tired, sleepy, shortness of breath. I just want to know what it means. Thank you ! :)