1 week delayed but Negative

1 week na akong delayed pero naka ilang try na ako mag PT, all negative. Nakakatakot pa kasi ngayon lumabas kaya gusto sana namin magpacheck kung sure na na pregnant ako. I experienced hot flashes, may araw na masakit nipples ko and balakang but all are also signs of upcoming period. Should I retest after a week?