When am I due?

mamainseptember

I know I'll find out for sure from the doctor, but based on my LMP and the fact that my cycles are 26 days long I should be due 8/13. Does the doctor take into consideration that my cycles are not the normal 28 days? Or do they automatically use 28 days and then my due date is 8/15?

 

My LMP was 11/08.