 [ Symptoms ] all my body is swelling my feet face breast i guess it is water retention i am in panic [ Disease ] hi well as you had your period on august 1st then around day 14 would have been your ovulation day give or take a day so have sex 2 to 7 days before that would have done it its takes male sperm 3 days to reach your womb and can live for up to 10 days max so 2 weeks would be about right then your doctor would be basing his from your last period date so yes he is right but dose it really matter when unless your not married and trying to workout who the father is by this calculation hope this helps you good luck