I I "thought" I was showing really early too, but as it turned out, my belly was a result of bloating and constipation. This is not abnormal and maybe thats the reason yours is aswell. Your right, we do also retain water, so some of your weight could just be water weight! I just felt fat for the longest time, but you will find that as you get further along, you will begin to notice that "too many cupcakes" looking tummy will transform into a very very apparent "preggo belly"! Weight gain is inevitable when you are pregnant- so enhoy it while it lasts. I just
try to remember that for every un-nessasary pound I put on.. its going to be that much harder to lose it after delivery. But that never stops me from enjoying a nice greasy pizza smothered with 5 pounds of cheese and some hot wings!

Yummy... (as my tummy growls)