chances of being pregnant?

had sex with my bf yesterday and he pulled out. this is our first time using the pullout method, we usually use condoms but this time we got caught up in the moment. i have been taking birth control for a while but last week i missed a few pills and did not make them up. i started taking them regularly again Sunday. I ovulate tomorrow according to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>. I am sure he pulled out in time, but I am a very anxious person. Do you think there’s a need for EC?

*yes i know it was stupid and i am going to start taking my birth control regularly!