Hi Elaine,
I am one of the discussion forum volunteers. I have only had one SCT but like you I lost all my hair. However it took about 8 weeks for me to notice any new hair growth, so hopefully you will see it soon.
I also noticed a change in my hair when it did finally grow back, it is much finer than it was before, and also I have noticed a change in my fingernails, (which are made from Keratin, the same stuff as hair!). They now grow at a much slower rate and are very soft so I do not have to file them down much as they tend to wear down.
Hopefully the SCT will have done what it is supposed to do, and you will see signs of returning to normality soon. Keep your chin up and let us know how you get on.
Regards, Tony