Just a Bit of Belly Fun

I have been noticing something strange these last few weeks... mainly the size of my belly changing from morning to evening to morning again. I figured I had to document it and make sure it wasn't just me going crazy. This is what I observed today...

I'd say that is definitely a noticeable difference after only 12 hours, wouldn't you? And no, I am not 'sucking in' in the first pic and 'sticking out' in the second. I'm standing as I normally would at those times of day. Granted, I may not stand as straight in the evening, being tired, but I'm sure it has more to do with my stomach muscles getting lazier as the day progresses.

No wonder my clothes don't fit as well by the time supper hits!