I think the jab was more about making a deliberately inflammatory statement like that, on a complete tangent to the discussion, based on what seems to be a clear distaste of the whole concept of pregnancy, and then misidentifying the organ involved.
Yes, you can get away with calling a uterus a "stomach" in some contexts. If you're going to flame about it, get it right.
Yup, as the deleted poster explained, I just used stomach to describe the general area. Belly would perhaps have been more precise. I try my best but I am a foreigner, and that has its price (I suck at commas as well).