Still not showing😢

Jessie • Started dating 4/13/14 Engaged 4/13/17 Married 4/13/18 Estimated due date Oct. 22 2019

I really think there is something wrong with me. I am 15w4d and still not showing. This is my first. I have been look at all the post of people who are due close to my date and are pregnant with their first and most of them are showing. I don’t understand.