What were your early pregnancy symptoms ?

Hey guys I think I’m pregnant but Im not too sure . I already took 5 test and all came out negative . The first 4 I definitely feel like I took them too early . However last week I was spotting for THREE days and it was brown and switched to dark red . I have irregular periods and when I spot its barely anything but this spotting was different . I can’t wait until a period shows because I don’t get my period every month ... there is also a possibility I am not pregnant .... I went for a PCOS blood test and everything came-back normal . It showed what pregnant women levels were and mine seemed to be regular . I’m just confused on the part why my breast were sore for 3 days , headaches, motion sickness,dizziness. Is it a possibility I am pregnant? I also did have sex twice during my fertility window . It’s about to be two weeks since we had unprotected intercourse .