 [ Symptoms ] okay so my dr and ultrasound tech says i am 9w5d and my due date is 21917 and i am trying to understand the conception my husband and i were together on the 26th and the 28th and 29th and every calculator i look at says conception date of 29th and i even counted from the due date back 266 days [ Disease ] swine influenza h1n1 is a very contagious respiratory disease caused by a strain of the influenza type a virus swine influenza h1n1 or swine flu h1n1 originally occurred only in pigs or rarely in those who were around pigs however a new strain of the swine flu h1n1 virus has been able to spread from person to person outbreaks of the new swine flu h1n1 started to occur between humans in march 2009