Is Pregnancy Possible Post Unprotected Sex While On Birth Control Pills?

have been on birth control for a couple months now, I normally don’t take it at the same time every day and somedays I miss my pill, when I miss my pill I double up the next day. I have just decided to get pregnant. My last period was March 15th through March 22nd all while I was taking my BC. I keep a period tracker and it says that I am fertile from April 19th through 25th but my ovulation day is April 24th. We just had sex on April 14th, he entered a couple times without a condom but then later used one, I have yet to take my pill today and not sure if I should, because if I don’t then I will start my period and I’m not sure if that will cause me to become less likely to become pregnant. We have not yet started really really trying hence the use of the condom. Should I be aware of anything? Should I stop my BC now? Is there a chance of pregnancy from this sexual experience?