I know what you mean. It was my first pregnancy (and only so far) and I had great abs before. I've lost some weight since my pregnancy but, since I was in the 2nd trimester by the time of the loss, I still ended up with a little of that post-pregnancy lower belly (just along the jean line) pudge and it reminds me constantly of what things should be like. I've definitely gone through days when I just hate my body.
Of course, for me, I should be past the pregnancy and holding a five month old right now. It just sucks all around.