Am i depressed?

i cry sooo easily..even if its something thats not even REMOTELY a reason to cry. and i dont feel like doing a lot..i dont eat too much, everything aggravates me, im tired a lot, im snappy...i dont laugh as much as i usually do..i barely even smile unless somethings hilariously funny which in normal cases i'd laugh but i jus smile...and like if i am happy it doesnt last long..at al