I really really really need help.. I didnt embark with enough food but i have no idea how to spawn in more... createitem CHEASE:COW 200 isnt working...
DF Hack is my only chance at fixing this.
Ok, for one thing, you spelled "cheese" wrong. And for another thing, you can't just guess syntax for commands and expect it to work. createitem takes an item type, then a space, then a material (then optionally a number). You gave it just one argument before the number, and it's unclear if it's supposed to be the item type or material, so it won't work like that.
Here is a page on the DF wiki about createitem:
http://dwarffortresswiki.org/Utility:DFHack/createitemI searched for "cheese" and found "CHEESE" listed under Materials -> Body parts. The example syntax given is:
item CREATURE_MAT:creature:material
where "material" should be replaced with "CHEESE", "creature" with the creature you want (e.g. "COW"), and "item" with the item type.
That same page links to
http://dwarffortresswiki.org/index.php/DF2014:Item_token for a list of valid item types. I searched for "cheese" and found "CHEESE" listed, so replace "item" with "CHEESE".
I'll test it in a moment, but I think that should do it. You can add a number at the end if you want, of course.
Edit: yeah, that works.
You could also try gui/create-item if you prefer GUIs. See dfhack.readthedocs.io for help - it takes an argument that lets it create multiple items at once.