Well I'm with you Cassie! I do see that her teats (but not her bag) are more filled, bu I do not see a great change in her tummy, apart from the fact that in the second picture she somehow looks 'heavier'?
She certainly isn't fat (in fact she is in beautiful condition) so we cannot blame her tummy on being grossly overweight, however she has had foals before and it is perfectly possible, even the norm, for her to have a 'large' tummy as she is in relaxed mode and not in work.
So I agree that 'something' is happening, but although I would love to think that she is going to provide you - and us - with a new little person very soon, I also have to say that these signs do not rule out the possibility of a false pregnancy either.
So we keep on with the guessing game LOL!!