Chance of pregnancy while on BC?

I have been taking a generic brand of the oral contraceptive Junel Fe 1/20 for about a month and a half now. My partner and I have had unprotected sex a couple of times the past two weeks. We had unprotected sex two days ago during my normal “ovulation window” but that day I also had forgotten to take my pills on time and ended up taking it six hours late. Any chance of pregnancy?