Possible TMI but could this get me preggo?

So my boyfriend came outside of me(we weren’t having actual sex yet) and then less than a minute later he went inside of me. He didn’t really wipe off. Could that get me pregnant? We’ve always used condoms and this was the 1st time we didn’t. we’re also teens and our school doesn’t teach sex ed other than abstinence. I’m kinda scared. I’m supposed to start my period in a day or 2. I ovulate between the 25th and 28th of every month. I can’t take birth control bc my seizure meds will interfere with it. idk if the answer to this is common sense or not bc all the knowledge I have about sex has came from google and friends. help