Sorry to add more to this topic for those of you not into poo discussions but I agree - there definitely is an excremental (if that's a word) change.

The only way I can describe the poo change is that I find it's not my own smell - like someone elses. It's really weird - it smells so terrible that I find it embarrassing and it grosses me out.

It really adds to the feeling of having some 'unseen force' taking over your body which is how I would describe the first trimester. he he