BFP and bleeding

Hi, i though i started my period 8 days ago, but it normally on lasts 5 days so i decided to take a PT and it’s positive. The first two days were like a normal, heavy period, next couple days were less and the last couple days have been very very little, more like brownish mucus than a period. I’ve had an ectopic before where i was bleeding but i also had a ton of severe pain. I haven’t had anything so much as a cramp thus time. Any chance this is a viable pregnancy??