Speech therapy is best thing to start with. A psichologist is good too, not for your stutter but for your self confidence and also to help you with your mother issue, wich I think is important for you to resolve. Don't let your mother keep that behavior. Keep in mind that there is no miracle and is veeery hard, but you will get better and better with time if you try to beat it. And also, believe me, most of the times when you feel like you will stutter and that few seconds when you stutter its not weird at all for the ones that are listening, only for you, dont panic.