Please help!

I'm suppose to ovulate jan 24th until jan 30th. I had sex today which is my first day of ovulation, I didnt know that until the app sent me a messaging saying" your suppose to ovualte in 5 days. The app says that today I have a medium chance of becoming pregnant. I am FREAKING out all over the place because I dont want to have any more children right now. I'm so scared what should I do? Do you think I am good ?