My hair was falling out after transplant and I believe they said it was due to the Prograf and/or the Cellcept. Now that I have had both of those medications reduced it's not falling out anymore. I had super thick, curly hair and now it's a little thinner, but also the curl on the top of my head has gone away causing my hair to look yucky! I cut it short to minimze the "yuckyness", but it still looks yucky. Hopefully the new hair growing back will be better. So far it's not.
I'm going to let it grow a little more and then go have a better style done. The lady who cut it this time just cut it and gave me no style. I look stupid. I'm going to start using the Neoxin Shampoo (I think that's the name) so that my hair will grow faster. Check in to that shampoo treatment. It's expensive, but it might help you out until the falling out either slows or stops.
I feel for ya! Good Luck!