Riddle

Help solving this riddle: "To be here is to be close to those dear, i see no light but feel warmth from within, its lonely here but soon ill be free" the answer has ten letters and 5 of the 10 letters are ( Y S C E O). I will also tell you that little homes are built underground and living food is down there
Will make girls scream!!!!
AND the FINAL clue is: There once was a cartoon of one of these.. The letters are put into no order.

Please any help would be much appreciated

P.S. So far i have the feeling it is some form of unborn baby, as to how it is spelled is where i am confused.