Pregnancy signs

Tink 💕Mother Of 4 • 💙💙BOY MOM💙💙

So I’m feeling really nauseous and having really bad heartburn I’m trying to get pregnant I have been trying for a while now I already had the light pink and brown discharge on the 18th so how soon could I test or is it still to early not supposed to have my period tell the 3rd but I’m not even cramping like I always do a week before I have my period but this time nothing just really nauseous