today I am 19weeks and 3days I found out I was pregnant when i went to the obgyn on september 8th by then the doctor said I was already 8weeks and 4days , I went to the doctors back on august 1 and took a test but it was negative I had sex with my boyfriend in july I dont remember the time but the date of my last period was july 10 I then had sex with a old flind on august 5th can he be be the father of my baby ? help I am really stressing over this , me and the fling used protection and it did not break me and my boyfriend never used protection