abnormal pap with edometrial cells

hi all, had my pap 2 weeks ago the dr called to say pap abnormal and endometrial cells found, havn't had any bleeding or problems. i have been on aromasin 5 years & was on tamoxofen 2 yrs. i am going today for another pap & she said will thread a thin wire into the uterus to collect more cells said would be crampy & uncomfortable. has anyone had this done? i am 7 1/2 years out from stage 3 wi 14 positive lympth nodes breast cancer.don't know if i'm ready to take on another battle but i will if i need to. any info is appreciated especially how the test feels. thanks girls, nb