Reply To: Pidyon Haben? Home › Forums › Simchas › Pidyon Haben? › Reply To: Pidyon Haben? January 5, 2010 3:56 pm at 3:56 pm #1163869 NY MomMember SJS: That is an interesting question, but I think it is mostly dependent on delivery and not conception – as long as the father is the genetic father of the baby.