How do you calculate the date of conception?

My last period started on August 29, and i have a due date of June 5, 2009. can anyone tell me how to calculate the date of conception? i already did a little calculator thing online, i just want to know the process so i can check it myself. please and thank you. =]

Date of conception depends on your cycle if its a normal 28 day cycle then count 14 days before the first day or your last period which would give you August 15th

hope it helps

and if your interested here is how you can find out your estimated due date.
Take the first day of your last period
(August 29)
Count three months back
(May 29)
Add Seven Days
(June 5)
This is your estimated due date.

How do I read the Chinese Lunar Calendar?

Some say to add 7 months to your age of conception, other's say 2 years. Either way, I conceived just before my 20th birthday. A month before actually. So does that mean it's a boy or a girl by the calendar?

Yes I know it isn't 100% but it's fun! And usually more often than not it is right!

if you concieved a month before you're 20th birthday, then your lunar age would be 20. Some sites automatically change it for you though !