Guy A or guy B

so i slept with this guy (guy A) May 19th and he came inside me. i was also ovulating at 33% (thanks to the knowledge of this app). i had sex June 4th (guy B) and June 6th i took a pregnancy test which came up with a faint line. i then took a digital test which came up pregnant. i'm currently 14 weeks and 2 days. is there a possibility that it's guy Bs?