sept 9th 2013
u/s dates me at 14wks tday. edd is 23/09/13. lmp 24/12/12 so when did i concieve? . ultra sound dates me at 14 weeks today my estimated due date is the 23/09/13. so when did i conceive? my first day of my last period was the 24th dec 12. which was quite heavy and lasted about 6 days and seems unlikely to be implantation bleeding. did i conceive on the 31st of dec?