Late period

I normally have a 30 day cycle. Last month my cycle went to 28 days. I’ve been regulating over the past 11 months as I had my bc removed in March. So when it usually comes sooner it consistently will do that. This month I am 3 days late than my regular 30 day cycle, but 5 days from my 28 per last month. Should I wait a few days to see what happens? It hasn’t come today yet either. Do you think if I’m regular that it’s possible I may be pregnant or that my cycle is messed up? Keep in mind I am never late, always early if there’s a difference.