18 weeks.. no bump.

Is anyone else 18 weeks pregnant with no bump to show for it ?? At this point people are thinking I’m lying about being pregnant because I still have a flat tummy 😂😂. Like there’s no way I have a little pear 🍐 in there ! 😳. This being a rainbow baby / my first pregnancy it makes me super nervous because you never know what’s going on. No more morning sickness , finally gaining my appetite back ( thank goodness) & no more sore boobs. I’m feeling the best I have in a long time. TYIA !