what are some early pregnancy signs?

my period is 3 days late and i had unprotected sex on my fertile window week and he pulled out right in time but i’m scared i’m pregnant bc i’m still in school.

i only been having a lil bit of sore boobs and very moody and a lil bloated. please help me.

i also can’t rlly take a pregnancy rn bc i’m too young to even get one.

please be nice