Hi there --
Estria has given you some good advice, and here's my two cents on the matter. FYI, I have had a colpo w/biopsies, endometrial biopsy and an ECC (as well as further treatment).
I have never heard of an endometrial biopsy also being sufficient for diagnosing cervical glandular problems. Yes, it is possible to get contamination from the cervix in the endometrial biopsy sample, but that is a hit or miss, and definitely NOT the standard for obtaining an actual sample of cervical glandular tissue. That is the job of an ECC. Also, if you had the two procedures in one, I think you would have noticed having the ECC, as it is a definite pinch, as opposed to the pressure/discomfort of the uterine biopsy.
When I had my colpo, my doc took two pinch/punch biopsies (which take very small pieces of the outer cervix), which is what it sounds like your doctor did. I also had an ECC, which was a second procedure, but was definitely something you can't miss! He said it would pinch, and it did, but by the time I could think wow, that hurt, it was over...but you definitely feel it (although don't be scared, for me it was really not that bad, and the pain did not linger!). The ECC, at least in my case, took a 1cm wide by 1cm long by 1mm thick piece of tissue. Anything that could/would be gotten in an endometrial biopsy would be scanty cells at best, since the most you would get is what's scraped on the way in/out of the uterus. The ECC takes actual cervical glandular tissue, and is the best way to figure on what's going on up there, although even that is hit or miss. For example, my ECC was totally clean, even though at the time I had invasive adenocarcinoma -- it's just that my ECC sampled a portion of cervix that wasn't infected. "Luckily" my pinch biopsies discovered the problem and I was able to be treated and am today thankfully cancer free
I believe Estria is right, that any glandular cells present in your pap because of your period would not show up as AGUS. As a matter of fact, a good pap should note that there are endocervical cells present, because that means they got a sample of those cells and that they were fine (assuming the pap is normal, that is). If you are showing AGUS cells, then there is most likely something that needs exploring -- but that doesn't mean to panic!!! There are plenty of reasons why something could come up abnormal, that have nothing to do with an indication of a major problem.
I know the waiting for test results stinks....and this is easier to say than do, but try not to dwell on it or get too nervous about it. I know you will anyway; we all do!! That's totally normal.
If you don't like the attitude of your new doc, then find another one! Unfortunately, many of us have had not so great experiences with our gyns...and sadly, it seems that at best it's 50/50 as to whether you can find one you like. Don't feel like it is you, or that you need to put up with that treatment. In my experience, any doc who is "annoyed" that you have done your research and are asking questions needs to be avoided. You'd think they'd be happy to have a well-informed, concerned patient, but a lot of them seem to get almost offended that you dare to question their judgment. As someone who completely trusted my old ob-gyn, only to find out that she dropped the ball on me, didn't do good pap smears for almost ten years, and was not up on her stuff regarding cervical cancer, I cannot urge you enough to question your doc if you are uncomfortable/unhappy/distrustful of what they tell you. I so wish I had been more firm with my old doctor. I hate her
I hope some of this helps! And please let us know how your test results go.