Where are you? Do you know why you started caring more about your speech? Depending on where you live I would say go see a speech therapist or join a stuttering organization is you live near a good one. Otherwise, the only I can say is to overcome the fear you have to stutter. You have to let it happen, see that you won't die, that it is ok, and you can say whatever you want. This is much much easier to do with a support person/group though.