anyone else having this issue?

i am now 6 days late with some symptoms of pregnancy, but all 3 test that have been taken are BFN. this has never happened to me before. my breast’s are sore, i am unusually exhausted, lower back pains, my stomach feels different, and i get dizzy/nauseous every now and then. i am getting so so frustrated because i’m still not starting my period and i’m coming out negative. what is going on😫