heavy bleeding this morning, but pregnancy test is still dark? help!

Nicole
Weird story. Tested positive (faint) since Wednesday. AF came heavy this morning so I figured oh it's a chemical 😔. Bleeding slowed throughout the day, boobs still painful. Decided to take a test when I got home this evening and it's dark still. What could this be? Ectopic? Super worried. I had blood drawn today to see if it was a chemical...any insights would be great.