||I had said in previous posts, that you can wash tablecloths, sheets, shirts, etc. on Chol Hamoed, if you did not have any others to use, for real.
Allow me to explain how it works.
This does not mean you have others, but they are dirty from before Yom Tov and that's why you ran out. It means you only own the ones you already used for Yom Tov and now your stuck with only dirty ones from the Yom Tov. Otherwise, in that case you cannot, because you pushed off washing them to Chol Hamoed. This is the reason laundry is assur. To avoid having people push it off till then when they are not so busy.