Thank you all for your replies and messages of support. It's good to know you're not on your own.
Annie0710 - I'm happy to keep in touch via this thread, especially if it can help somebody else.
I've tried the Nanogen volume spray, I think it's called, but not any of the fibre ones as I wouldn't know what colour to opt for. Since I started losing so much hair I've stopped colouring it as I didn't want to encourage any more to come out, so my hair is a mixture of browns and grey.
I was aware that hair would grow at the sight of application and wasn't too worried about it. It just seemed a cruel irony that as it dropped out of my scalp it was growing like mad on my body.
I was told to use a pea-sized amount, but to make a tube last 8 days means that you're using one helluva big pea, bigger than any pea I've ever seen!

When I had my blood test at the end of July (after almost 3 months on Testim and Oestrogel) my oestrogen level was 292 (was 176 when on Premarin) and my testosterone level was in red and 4.4! I could see that the optimal levels for testosterone are 0-1.8. Previously my levels had been so low as not to be measurable.
Tempest - Yes, I was told to go straight from the Premarin to the Oestrogel/Testim combo and I did ask that specific question. The trouble is that because I was seeing a specialist I assumed that I was getting the best advice. A bit naive I guess, with hindsight. I do hope you manage to get your hormones sorted out. I remember from previously that you've been through a lot already.
Dawncam - I did laugh out loud when I read your comment about Falcon crest hair!

I'm so sorry to hear that you're going through this too. I sincerely hope our hair does recover now we've stopped the testosterone!
I've now been off the testosterone for 3 weeks and I have noticed that my skin and hair are not as greasy as they had been getting, so I guess my levels are slowly coming down. I don't know if it's coincidence, but I have been having a lot of very vivid, unnerving dreams since I stopped it too.
Thanks again and hugs to everyone x