“accidental” nut inside me

Last night my boyfriend and I had sex in the car and I was on top. All of the sudden it felt really wet down there so I got off and was like wtf. When I felt it, I smelled it and was like.... “you nutted in me??!!” And he was like “no?” And I was like “yes you did” and then he laughed and was like “IM SORRY IT WAS JUST SO GOOD I DIDNT KNOW WHEN IT WAS COMING AND IT JUST HAPPENED” and I was like “....hahaha” Anyways, I’m a little nervous because I’m ovulating right now and that’s when you’re the most fertile. I’m on birth control and have never missed a pill except on the 4th of July, but I doubled on the 5th and took it regularly on the 6th, when it happened. I don’t know if I should be worried or not, this kind of thing hasn’t really happened before but I just wanted some other opinions. HELP!!!