Periods while pregnant?

I know some women spot while pregnant and was wanting you glow ladies opinions. I was suppose to get my AF 11/18. I spotted on 11/17, filled one tampon on 11/18, and spotted again yesterday 11/19. I know someone spot while pregnant an or continue to hve AF for a few cycles. My usual flow is heavy and lasts 4-7 days.... Should I test? Did any of you spot or have AF while pregnant?