Scanxiety - spot on! Sending good vibes to anyone with scans and investigations coming up.
Nanny and Mrs - I was going through the gynae thing last summer at the same time as discovering that I needed a 2nd mx, so that was fun.
My understanding of it, from the tiny bit of research I allowed myself to do at the time, was that tamoxifen can sometimes cause the lining of the womb to overgrow. There is a chance that can become cancerous. An early sign of that can be 'abnormal' bleeding ie post menopause or outside of usual menstruation. Because it's such an early sign, any problem is usually very treatable.
Now of course that scenario leaves loads of room for there to be absolutely nothing at all wrong. I'm no amber and I cant quote the statistics but my understanding was that its far more likely to be nothing than something.
I was investigated because of my age - 54 at the time - and everyone assuming that I must be post-menopause. I was pretty convinced that I wasn't and that the bleeding was just normal for my body. But I had to go through the investigations - external and transvaginal scan which was inconclusive owing to my mirena casting shadows, followed by a hysteroscopy during which I had a 'global' biopsy and a biopsy of a small polyp. Both came back entirely normal but it was an anxious wait and I cried in the doctors office when i got the results 
As a delightful little side issue, they discovered an ovarian cyst on my right ovary at the time of scaning my endometrium and as my CA125 came back slightly elevated I had to have a CT scan. I got the results of that the same week I was told I had to have my 2nd breast removed. The gynaecologist was a bit vague and said to go back and see him a few months later when I was over the breast surgery.
I saw my lovely BCN a few days later to talk about the practicalities of the mx and she went over the abdo CT scan with me and basically said that there didn't seem to be anything to worry about there.
The upshot was that I saw the gynae in January and a more recent repeat ultrasound showed my endometrium to be normal and that the cyst had disappeared of its own accord. CA125 had also returned to normal.... so all of that stress and worry for nothing........ He discharged me.
I don't know how helpful this epic post is. I can reassure you nanny that the procedure itself is nothing to worry about. I found it uncomfortable, but I was able to drive myself home afterwards, and I didnt need to take the meds I was given to stop any bleeding - I had very little. Get some sanitary towels in though. You wont want to be putting a tampon up there! And some paracetamol. You'll have the after effects of the GA to deal with, but you know all about that. And at least you wont be squirming with the procedure like I did.
Waiting for results is always going to be a crap experience even when the chances are its going to be absolutely fine. You know where we are for hand holding.
Before I went through all this, I used to hear that people were waiting for results and I thought very little of it. I had no idea of what that meant and how horrible it is. I think I have much more empathy for people now. I have found friends vary in their responses. Generally I've found those who have been through something similar to be most understanding. I have 2 close friends in that category who have been fantastic. Others are usually sympathetic but just expect you to be back to normal - whatever the hell that is. And some seem frightened to talk about it. I think that having this kind of thing so close to them is scary - like "if it happened to her it could happen to me" and they dont want to think about that which is understandable.
Counselling has been helpful. It's good not having to worry about the feelings of the person I'm talking to, and being able to be honest.
That's my posting allowance used for the next 3 weeks! Wishing everyone well and thank goodness for this thread...