Period or pregnancy 😮

Hey ladies, I've never experienced this before.

My last period was on January 10th, usually my periods are short, about 4 or 5 days, and my cycles are an average of 22 days max, this time my chart said I was late by 2 days and last night I spotted pink a few hours later it was bright red but this morning I had nothing, then I spotted brown....I am 3 days late now..or is it a late period..I checked my chart and for the past 2 years my periods have been consistent.

Not sure what to think 🤷