IfPer Mishna Berura siman 532 if you do it every Erev Shabbos you are allowed to cut them today. The Mechaber holds you are allowed to cut your nails on Chol Hamoed no matter what. The Rama adds in that only if it is done for Tevila then it is allowed. the Mishna Berura says if it was done on Erev Yom Tov you are allowed to do it on Chol Hamoed for the last days.
