I had a ultrasound thursday nov 13 and i am ten weeks due june 11 2015 when did i concieve?

08/2014- approximate: telling exact date ,from the Ultrasound though may not be perfect approximately , it is by first week of August 2014 ,proabably you have conceived. There is a rule of +7 days, and -3 months in the forward direction to calculate the expected date o delivery ,we physicians use. In your case when we apply the same rule, it comes to August 4 th ,2014 - the date of conception, though approximately.