Help! Illustrator file on a repeat pattern is blurry , tried everything

Well perhaps not tried everything, but everything I know which probably isnt that much. Ive not had this happen before and using the design as a textile on  clothing. Im obviously doing something wrong but not sure what. I have saved it in jpg, PNG, vector, eps no joy. Says its high res and fairly big file. I havent used illustrator for a few years now so familiarising myself with it all again. Im sure theres something new I havent got a grasp on most likely.