Stuttering is nowhere near as bad as DS or Cerebral Palsy. Stuttering can be managed to be improved far easier than those genetic conditions, I think you need to take a long hard look at yourself, take the pity D out of your mouth and start enjoying life. Surround yourself in hobbies and friends that enjoy your hobbies, swim, go to speech therapy, and realise a stutter is not that bad on the scale of things.