GLANDULAR CELLS ON PAP

I had surgery, chemo and radiation for breast cancer in 2016. I take Tamoxifen and am doing great.  Except that today I was told I had "glandular cells" on my pap smear and now I have to have a culposcopy and biopsy.  The GYN says she normally wouldn't even biopsy this since I have no symptoms, however, since I'm taking the Tamoxifen she wants to make sure all is well.  Anyone have this happen?  Any input?  Of course I really don't want to go through cancer again.  :(