I have really thin hair pre-op...how bad is the hairloss?

I am so scared that I will look like I am balding if I start losing a lot of hair. I do not have much money for a wig and I look absolutely horrible with short hair. How much hair is normal for a post-op to lose?

We greatly appreciate your interest in helping us build our Q&A database. To discourage vandals from posting garbage, however, we require people to register before posting.