Faint line today.. after bleeding on expected day of period

Te

I posted yesterday that I thought i was having implantation bleeding, light pink. negative pregnancy test...

Today, unexpected day of my period, I have a light but bright red flow but accompanied by a faint positive pregnancy test.

The only reason I tested after starting bleeding is because of tingling nipples and nausea with vomiting after breakfast.

Why would I get a faint positive accompanied by bright red blood?

Has anybody had this and have had the pregnancy stick???