I started my period may 26th and had unprotected sex may 27th. Can I get pregnant from that? I am actually pregnant now my doctor said I conceived June 9th. I was just wondering if I am pregnant from this incident or when I had intercourse early June incident? Please help

Back dating a pregnancy is never easy. There is a slush time involved. Most doctors put week 0 day 0 at the start of your last period. Conception and implantation happen in the two-threes afterwards. The problem is that every kid is different, grows different, and will present different. The dating techniques are estimates based on size so truthfully it could be either.

Is this a matter of paternity or are you just curious which encounter caused the pregnancy? If it is a matter of paternity then you're going ot have to wait for a DNA test after birth.