So confused

Destiny

So I was 6 days late starting my period so I tested to ease my mind, the first test came back positive and the next day I started bleeding, and it’s heavy blood and bright red. That was three days ago and I’m still bleeding but I took a test this morning because I just had a gut feeling, took a digital and it still says pregnant. I know this sounds so stupid but has anyone else had a period and bleed for their normal cycle but still be pregnant?