Am I really that big :/

Mercedes • Sun, May 03 • Have one beautiful daughter, handsome twin sons and due with baby #4 October 6th 2015

I went shopping today and the lady was like aww you must be due next month...I laughed a little and kindly said nope not till October and she looked so stupid. I am 17 weeks and 5 days. Only gained 5 lbs so far