I would ask your doc what they think but...i had my IUI yesterday (Thursday) and said that i thought i was O'ing on Wednesday (but think i actually happened late afternoon yeesterday), RE said that is actually really good because the egg can survive for 24 hours.

__________________
Shannon
Kayleigh Morgan 9-02-01
Kendyll Grace 11-25-02
Brynn Elizabeth 11-24-05

M/C 6/00,12/03,5/04
Chemical pregnancy 6/08