16wks & “bump” has got smaller lol!

My stomach seemed bigger in the first trimester & has got smaller in the second! Wondering if most “bumps” are just a combination of water retention, trapped wind & constipation.. plus our uterus maybe pushing our guts out/up?? I’m finally less constipated & I’m drinking more (which stops water retention apparently!) so I think my “bump” was just a combination of those things! Also my baby’s still hiding in my pelvic area, so no real “baby bump” yet for me! Thoughts?!