You have nothing to lose. Life is impossible to lose. You gotta understand, You can't commit suicide just because you lost something important. You'll get right back up before you know it. Just promise me you won't kill yourself.
Whatever it was, I'm sure you'll find it soon. Nobody will kill you and there's no need to kill yourself over this. I'm sure whoever it was they wouldn't let you kill yourself over this. Just do me a favor and get rid of your depression.
Call the local county assistance office and tell them that you have had no food in weeks and am pretty much starving. They almost always give people emergency food stamps. Even if they don't for some rare reason, they can give you a list of all the food banks in the area that give away free food. Get on the phone in the morning and start calling until you locate help that is freely available in almost every city and town in the US.
I can't kill myself, i'd just prefer someone else do it so I can stop painfully inching towards it naturally.