How can you tell if the condom broke or chance of getting or prego

FH

So me and my bf been having sex with a condom but he said he never nut but you can still get prego wit pre cum idk if I should be scared or not but I’ve been having pms like upset stomach headaches and felling bloated it says my period is in one day idk if it’s my period actually coming or I’m prego I don’t wanna miss it but I’ve been having symptoms