Chances of being pregnant?

I have to wait a few days to take a test but I would like some input. 
​My boyfriend and I had sex without a condom and he finished inside me. Some details are i am on the pill. However, I was late on one or two pills that pack and the week before I changed the time I take my pill from 3 pm to 7 am. Also, it was the day after my placebos ended in my pack of BC pills. 
​Any thoughts would be appreciated.