Breakthrough Bleeding More Condition_symptoms Am I Delayed Because Of Breakthrough Bleeding?

Am I delayed because of breakthrough bleeding? - breakthrough bleeding more condition_symptoms

I was here in my bike and I am now 10 days late on my period. During my last cycle I was on the pill for about 17 days, until it stops, because the bleeding was very irritating. I bled for more than 10 days, in time, like a normal period, but it is almost certain that I was bleeding, as was the first time that BC pills. This period could be that, or I'm pregnant? What is more likely?