I started my period and forgot to take birth control pill

So about 3 weeks ago I started my period and sometimes when I am on my period I tend to forget the pill, I did this time and due to my boyfriend living an hour away and not seeing each other much it didn't bother me.
A week after my period stopped we went away together and I was still not on the pill and we had unprotected sex a few times where we failed to pull out, a couple days later I started bleeding very lightly, it was a browny sort of colour and then the next two days it was medium flow blood and then it just stopped whereas a period for me will last a good 7 days and heavy and it had only stopped a week prior to this,
Its been a week and a half since we had sex and I'm wondering if there is a chance that I am pregnant even though I have bleed?
Thanks