Problem in speaking. To speach therapy.

In 2004 (at age of 16), I suddenly got problem while speaking. I struggle to start a sentence irrespective of time, language, place, medium or the audience. I went through a series of Medication and Speech therapy back in 2005. I got better that time but never got cured 100% Now since last 15 days. I am suffering with the same issue but this time it is worse. Please suggest for a permanent cure. I feel a cruch kind of in my stomach when I could not speak due to efforts made for speaking. Also i feel strain on my neck muscles and tongue most of the time. Many a times a keep on making some sound from my mouth just because sometimes i feel that i have loat my voice. And this is getting worse day by day. I am not sure whether this isue is concernd with ENT or to Speach Therapy.