Permanent Hair Loss?

After the initial shock and grief over losing my breast I got over it within a year and haven't looked back.  Hair is very different.  I was fine with being bald while on chemo.  I was in the experience of cancer treatment and that was part of the deal.  I 'knew' it was only temporary and it would grow back because that's what the doctor and the nurses told me.  The stress began when months kept going by and no hair was growing.  Then I started to panic and everyone around me kept telling me not to worry and that it was coming back and they thought it was growing and I should stop being stupid.  That went on and on.  I knew I was stuffed and all my worries were minimised like I was stressing over nothing again.  I had to go to my daughter's wedding looking terrible.  Even my psychologist said, 'It's only hair'.  Who says that?  People with hair say it.