Never Hungry (Feeling Full)

Hello, guys.

Just lately I had this issue for like a week and then it disappeared - now it returned.
I feel like I've just eaten tons and tons of food at all times. Weird thing, bowel movements are alright and no real pain anywhere. It feels like I'm about to explode though. A feeling of tightness around the waist. I also felt slightly dizzy yesterday and tired.

Could this be TMS? As far as I know anything could be TMS.
I do crunches for my abdominal muscles by the way, could those be the cause?

Thanks in advance for all your ideas.