i’m scared

my boyfriend and i have been having a lot of sex recently but we always use a condom and he used to always pull out as well. i’m not on any birth control because my mom is a natural freak and believes it is not natural. (i am in college btw) but recently my boyfriend has been finishing in me which is not something we normally do and every time a condom breaks he puts a new one on but recently i’ve been having so concerns. my period came insanely late, every time i try to eat i almost throw up, i get extreme hot flashes every once and a while and i don’t know if those are signs of being pregnant.