Factor VIII Carrier & Infertility

Is anyone a Factor VIII Carrier?  I was diagnosed as being a Factor VIII Carrier.  My hematologist said it is a cause of my infertility because a fertilized egg cannot implant due to my Factor VIII blood clotting issue.  He said Infertility Specialist often treat infertility with hormones (which is our current form of treatment) which actually triggers/makes your Factor VIII rise which would cause increasing implantation issues.  He said you have to be monitored closely so that they can keep my Factor VIII in a narrow range to achieve pregnancy.