Eh? 9days late

Hey! My periodic 9days late. And I used to be very irregular. But for the past 9months or so. Iv been normal or even early. But I'm late. The top of my breast but like upper chest area is feeling very tender. Not and I have been feeling sick lately. But idk if it's just a flu you know? Is it two early to take a pregnancy test? I already did and it was negative. But honestly idk how good of a brand they were. Some advice please. (no hate or rudeness, Simply not needed)

The dots is the area where it's hurts. Just for like a general idea. And the test

Vv