Where are you baby bump?

Tomorrow I am 18 weeks and don't feel like I have an appropriate "baby bump".......

I am in Utah for work, training some new staff when one nurse who I estimated to be about 7 months pregnant told me she was going to get her 20 week boy/girl scan later that day. I was literally shocked at how big her bump was! Outside of her round, cute belly she is thin. I instantly felt jealous.

                                                 

I then took to the internet to look up what other people's bump reflect at 18 weeks. I found more or less everyone with the below ... 

Am I even pregnant?! WHERE IS MY BUMP!!!!!