😔 Help

Anybody ever had sex with two men in different weeks. But one of them was a mistake and the other one is someone u have sex with regularly but they were back to back the next week and now you pregnant. How do you figure out who’s the dad? By calculating your last period?

UPDATE: Soo should I️ tell the man I’m in a relationship with, that I️ don’t know it’s his or just go along with it and say it’s his child cuz it’s a high chance it could be his cuz we have sex all the time and the other boy was only one time!