Did your doctor also do an ECC (endocervical curettage) when he/she did the colpo and took a polyp for testing? If he/she did, then your doctor's plan sounds reasonable (to me - but I am "just" a patient.
). If the doctor didn't do an ECC, then I HIGHLY recommend you ask for one. It is the only non-surgical way for a doctor to know what is in the cervical canal.
I had cervical cancer (adenocarcinoma Ia1) but had no symptoms. My cancer was diagnosed only because my regular doctor did the HPV test when she did my pap, and the gyn did the ECC when she did the colpo. If those two things hadn't been done, we wouldn't know about the cancer and it would still be growing inside of me.
I swear by the HPV/dna test for women over 30 and I swear by the ECC whenever a woman has a colpo.