Around August 18 I reckon
I couldn't have conceived on the 18th. I was still on my menstrual. My last menstrual was august 15th
I would say around the first weeks of september
My due date is July 21 I conceived October 27 since conception takes three days. I hope this helps u.
All I did was 280 days (40 weeks) before your due date. Hence the "around"
Im due the 19th may and concieved around the 27thaugust so you would have concieved around the 30th august give or take a few days