Opinions ?

I had sex with two guys . one in LATE July & one in LATE sept 2018. I had a baby June 18th 2019 two weeks “early”. I always had irregular periods so I wasn’t sure based off a period when I gotten pregnant . When I went for an ultrasound on November 7, 2018, the baby was a dot lol. So small. They guessed 5-6 weeks. So should I be worried of who the dad is. It’s more likely the september guy is. we are doing a DNA to be on the safe side. But I’m just soooo curious of what you guys think 😩 no judgements please.