Confusion

So please don't judge. I've had it hard from everyone else. I had a Fb that I slept with on the 18th and the 2nd. Then I slept with the guy I was talking to on the 28th and the 4th. Boh guys know about each other and were okay with it. Well on the 14th I found out I was pregnant. My FB said there's no way it's his an the guy I'm talking to said it's most likely the my fbs. I had been sleeping with my FB for 2 months and then slept with the guy I was talking to for the first time right around the time I got pregnant. Idk which way to lean towards. I can't find a place around here that offers the noninvasive paternity test. But just wanted to ask for advice and opinions.