When can I expect my belly to "pop"

Sammi • Mommy to Kota 👼Mommy to Maya 🌈. Married💍 Titan Atlas due nov 7th.

Hey ladies. This is my first baby, I am 15w 4 days and I don't have a belly really. It still mostly looks like bloat, except when I wake up. Right away in the morning I have a small bump... but it goes away. I know everything is fine with baby. I was at ER for severe nausea on Friday and they checked baby's heartbeat and it was a STRONG 153bpm.... when is it 'normal' for ftm belly to pop out ? Or to even feel flutters, I haven't felt anything.