yup I hear ya .. I feel like a fatty at times too and this pg I have put on more weight than my frist with only 7/8 weeks to go, however I am all belly and no weight anywhere else so I am not too bothered about it (well that;s what I keep telling myself esp when ppl tell me how large I am ... very insensitive).
The weight comes of pretty well with BF and lots of walking and yoga, so its all good.
I eat when I am hungry and try not to pig out too much on junk, but at times its hard
good luck