Any experience with endometrial biopsies?

Hi,

I've just turned 40 and have been on combination HRT for about a year due to perimenopausal symptoms.  Randomly started getting longer bouts of spotting, and heavier periods so saw my GP who referred me for a transvaginal ultrasound. Had that yesterday, they told me the report would be at least a week. GP surgery rang today to see me as the results were back and they wanted me to come in this morning.

Results showed endometrial hyperplasia (which she said could be from the HRT but my grandmother died of uterine cancer and I've no other female relatives so it could also be cancer), pelvic congestion (I'd never even heard of this but it explains all the random niggly symptoms I thought were just part of life!) and a small ovarian cyst (not large enough to worry about torsion but no idea if it's benign or not).  She took bloods to test for some ovarian cancer marker (I forget the name, it was all a bit of a blur to be honest) and referred me to the 2 week cancer pathway.

She told me I'd likely have to have a hysteroscopy or endometrial biopsy and I'll be honest, I'm bricking it.  I'm not good with internal exams at all, especially if there's any sort of pain.  I know it's silly, in the face of a potential life-changing diagnosis, but does anyone have any experience with endometrial exams/biopsies that they'd be willing to share or offer advice on?  Thanks ♥