If am almost 27weeks when was my conception date and due date?

What did your OB say: Your OB should ahve already answered this for you, that is the first thing your OB does when he or she sees you is make sure you have a viable pregnancy and give you one due date , if you are 27 weeks today the wheel says you are due 2/4/13 and if your periods are every 28 days u would have conceived may 13 or 14 you need to go see your OB on monday so u are satisfied with your due date.