I had a total thyroidectomy in january. recently my pap test came back with agus cells, so i had a colposcopy & biopsy. is pregnancy still possible?

Yes indeed: Congratulations on your focus both on getting good health care and your desire to become a mother. The biopsy results will determine whether there's anything in the endocervix that needs to be treated -- chances of a lesion requiring hysterectomy producing only "agus" are low. Be sure to maintain your thyroid medication through your pregnancy.