Trying to find out date of conception?

my son was sleeping with this girl and now she is pregnant, she said the baby is not his. but I want to make sure. she is 9 weeks pregnant, due Octob

my son was sleeping with this girl and now she is pregnant, she said the baby is not his. but I want to make sure. she is 9 weeks pregnant, due October 5th (by the ultrasound) and her last period was December 14th. My son was with her january 9th through the 12th. Any help is appreciated

or:my son was sleeping with this girl and now she is pregnant, she said the baby is not his. but I want to make sure. she is 9 weeks pregnant, due October 5th (by the ultrasound) and her last period was December 14th. My son was with her january 9th through the 12th. Any help is appreciated

Tags:girl,conception,