Could I possibly be pregnant?

My period came on 8 days late, then it went off after 3 days. Now today should be day 6 of my period and when I went and used the bathroom I was spotting bright pink blood. What does this mean?

Edit: my period is always 5 days and never late.

Edit2: I see some people are saying it’s impossible but my aunt has her period for a couple months before even finding out she was pregnant