 [ Symptoms ] us dates me at 14wks tday edd is 230913 lmp 241212 so when did i concieve  ultra sound dates me at 14 weeks today my estimated due date is the 230913 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 [ Disease ] sept 9th 2013