need closure on who the father is???

This has been roughly on my mind for awhile now:( Okay so on june 4 i had sex with guy #2. on june 9 i had my period through the 15 of june. The next day on june 10 i went to the dr and they said it was a regular menstrual period and thst im not pregnant.So the guy i been dealing with for almost 2 years "guy #1) now i been having sex with him through the 18-23!of june. I found out I was pregnant on july 5 the day before my next period .. currently i am 19 weeks5 days and i just need help i been having faith that guy #1 the person i been dealing with for awhile is the father... like idk i need help