What Is It Exactly?! Depression or Nth at All?

my weeks are now showing patterns.

normally days at work i'd start off with high-energy n even having laughters n socializing with ppl whom i normally wouldn't get too well along with; then start breakfast the hard time, however much i wanna eat, nth seems right n often immediately after (or sometimes in the middle of) the breakfast, i needa dash off for toilets either to discharge everything cos my stomach hurts, or the food got all puked out involuntarily.

lunch doesn't look too gd either, i can't seem to find the right food n the smell of food often makes me sick n wanna go puke yet again. in between meals my stomach feels so empty but then the food can't seem to get down my throat or safely reach the digestion system.

then my moods go wild in the afternoon, i'd sit in front of the computer unable to do anything but feeling hot in the cheeks n got really irritated most of the time.

toughest time of the day prolly is right after work, either i feel like crying or not knowing what to do with myself.

as for dinner i can only have some rice n veg but not meat, i can usually finish a bowl but that depends too... like my stomach is not holding things tonite, i got really upset at a point n puked, now my throat is burning.

tho i really wanna fall fast asleep but once i crash on my bed, my eyes burn n sleep doesn't come easy.

then fri nite comes headache, continues sat, sometimes it even bothers me on sun. it's been happening for slightly more than 2 weeks now, (the puke started since last week tho) whatz wrong with me exactly?