To be perfectly honest, this is nothing to worry about. What you have experienced is called sleep paralysis. Everyone's body goes into sleep paralysis during REM sleep so that we don't physically act out our dreams. Normally this wears off before you wake up, but in your case, you may have been woken quickly or unexpectedly for some reason, and your body was still in paralysis.
The noises you heard were part of what is called hypnagogia - a state of consciousness that occurs between waking and sleeping. Look this up on wikipaedia, you will find it very interesting!
If it happens again, don't panic, it will wear off. Any weird or scary visions, noises, sensations or even smells you experience as part of hypnagogia will also disappear after a few minutes.