Sometimes it takes quite a while, say 6 weeks, and I have heard it sometimes comes back all at once...kind of like the muscles were paralized, then woke up. I was lucky, I did not have any trouble, had two surgeries. Hope it happens soon.
Time...thats what you need.
I occassionally still get a 'hoarse' voice and it sounds like my 'voice ' has broken lol.
Give yourself time.......it will come back.