Conception date wrong or right?

The doctor said my due date is feb 9 and my conception date is May 19th. Well, I changed doctors and she also said that she is keeping it at feb 9th and conception at may 19th. Well, I found a pregancy calendar thing on the internet Typed in the due date it states the conception date is may 6th. Which is it? I'm so confused

Conception date wrong or right?
with my first I was due on feb 9th and I conceived on may19th.
Reply:It would be feb.9th because that is 9 months and if you didn't give birth till may that would be a year of having your kid in you.You aren't an elephant.They are the only ones that can do that!!
Reply:Take the date of your Last menstrual period and add 7 days. Then subtract 3 months.
Reply:conception can happen any time in 2 weeks after your period, so its hard to actually confirm conception, they work out your due date by the first day of your last period, so thats how the thing on the internet worked it out. thats how i work mine out, sounds like the doctor had a guess at when you conceived but if you get a calender and count back 40 weeks from feb 9th its about may 6th