I'm 19 weeks and I can tell I'm pregnant but every else keeps saying they can't tell. what does your belly look like at around 19 weeks?

I'm 21 weeks and I look like I just gained weight not pregnant but I'm having a girl so little one is all in my back
I "popped" around then, so it can come to you any day now. Usually for first timers, five months is when women start showing and looking pregnant. You may just be one of the lucky ones and look small your entire pregnancy as well