weeks into my pregnacy i notice i was having problems with my voive. i love to sing and had planned on singing to my baby while she was in the womb. it was then when i realized my voice was cracking uncontrollably and notes just were't comming out at all. my voice is gone and i am very depressed. what happened? even just talking my voice will crack. what could it be and what should i do. singing means the world to me. please help if you can. thanks