Lmp on july 9th month before that was june 11th (due date april 15th) when did i conceive?

July 19th-27th: Congratulations! using http://www.Baby2see.Com/conception_calculator.Html w/due date of april 15th, 2014, gives july 19th-27th as range for conception. Calculator also gives july 9th as first day of last menstural period which is consistent w/your information - it's always a good idea to run info thru several different calculators both forward & backwards.