I'm 17 weeks and I can suck in the top of my belly lol but not the bottom. Different strokes for different folks so it will probably happen soon
Mine started at about 20 weeks.
Mine strarted at 13 weeks, I'm now 17*1 and it hurts if I even try to suck up the gut lol
I'm 24 weeks and still waiting on my proper bump
I'm 22 weeks and i still don't look preggo to people even tho i feel huge