Question: Help!!!

Hello, I am trying to find out between two guys who the father of my unborn is. Guy #1 I was with on 6/26, 7/1, 7/10 unprotected. Guy #2 7/12 with protection and withdrawal. In the month of June I did not have a period. Last menstrual was May 11th. After intercourse July 12th I took 4 birth control pills (stupidly bc a friend told me it was equivalent to 1 dose of plan b) I didn't get a period in July I had a dating scan done July 31st showed me at 5 wks 1 day and another done Aug 15th showing me 8wks 2days dr has given me conception date of July 9th is there a way to determine father w/o dna