Very frustrated

I admit it's been a while since I have had to live with a roommate... Maybe I'm just used to living by myself in being able to have things the way I want them... But this morning having to go back and do the dishes and clean up the apartment and everything when my roommate has been here during the week... Is really frustrating me... And the simple fact that I bought food last week and when I go to use it there is nothing left and so now I have to go back to the grocery store because I didn't know everything has been opened up and used... And ran my errands this morning and thought I had everything I needed so that I would be able to stay inside but now I have to go back out and that pisses me off.... I don't understand why she couldn't have just said that she had to use whatever it is to use and left it at that ...but I'm just thinking that because I haven't been using it its still in the fridge and its not like that because everything is gone... I'm trying not to be frustrated but when she gets back into town we are really going to have to have a chat about cleaning up and buying groceries and what it is that needs to be done to keep the apartment together.... Its not fair that I'm the one left to clean up the entire mess that she left while packing and whatnot so she could go out of town for 2 weeks ...ugh