Hi Anne Marie,
I lost my voice for just about 4 weeks, all I could get was a whisper and I, like you, had to force that.  It's not uncommon and shouldn't cause you any concern.  Boy did I HATE it though!  I love to talk   

   My voice now is normal although I cannot scream like I could before radiation, it will make me cough.  
I also had horrible dry mouth at your stage of the recovery.  I would wake up at night and my mouth would be so dry and my tongue stuck to the roof of my mouth so badly that I would feel anxious and scared.  I thought that was how it would be for me for the rest of my life.  Within about 4-5 weeks that resolved and pretty soon, I could go all night without a drink.  
Everything you describe is normal and will get better.  Patience is the key!
Minnie