Am I being petty?

Sorry, this is a completely self indulgent moan...

My housemates went out clubbing on Monday night, leaving a fair amount of washing up from dinner. I left it, as they said they'd do it when they got back, or the next day. I left the house yesterday (Tues, confused yet?) at 4pm. Still no movement of the mountain of dishes, but, I assumed this was due to the hungover state of housemate A and would be rectified

Now, on my way home tonight I got a message from housemate. "Sorry about the washing up, I've not been feeling well since Trash [the club]". This is a good 24 hours after I was last in the house, and not only have the dishes still not been done, but even more have been added. In fact, the sink is full of dishes, in cold minging water. So someone has filled up the bowl, and put the dishes in, but has not actually washed them. Which, frankly, is unhygenic.

I am currently sulking in my room (the house is empty, so I can't moan at anyone but you, my poor readers), quite hungry, but aware that cooking would involve washing up someone else's dishes (we're low on cooking equip in our house!). I would also like to point out that I have not cooked anything in the house since before they went out clubbing, so none of it (well, maybe a mug) is mine.

Now, I know I am probably being petty, and please feel free to tell me so. But, it really annoys me, and I've only been in the house about a week and a half.....

Rant over!

PS: Stress/ranting/sulkiness levels maybe higher than normal due to stressing about The Play. It'll all be over soon!

PPS: Ironically the picture has been borrowed from a BBC Health article about ME...