Hi guys, I have a few questions regarding stuttering, some of them asked a lot here probably. I would to hear your thoughts!

Hi guys, I have a few questions regarding stuttering, some of them asked a lot here probably. I would to hear your thoughts! Hello fellow stutterers! I have a couple of questions to ask and some thoughts to share, if that's okay. I figured, if I decided to talk about my stutter, might as well be with people who know how it is. I am 19, as far as I can remember I have a stutter. The thing is, how I understand it, there are two types of stutterers. One type is for everyone. When you get anxious or nervous, you might mumble and stumble and rumble. The second type is for some people. And that's when you can call it a speech impediment. I put myself in the second one. Why? Because I stutter when I am home alone, in public, with friends and with strangers, happy or sad. And this part might be different from some people here. I stutter on everything and nothing. What I mean is, sometimes I stutter on a word and next time I won't stutter on that word; there are no specific words or letters that I stutter. It's more like I feel pressure in my lungs, and through my neck to my mouth, like a weight is being pressed down. And no matter what I do or how hard I try, I will not say that word. But 10 seconds later, I can say that word 5 times in a row, no problem. I would like to ask if there are some techniques, books, videos, treatments to overcome my stutter. I do admit I have a bad posture, and my breathing is very shallow and fast, but when I tried sometimes to breathe slower I still stuttered on a few words, and it kinda hurt my lungs(maybe it's just because I'm not used to breathing properly). I am writing all this because I have a presentation in 2 days and what's funny is, I don't have the fear of public speaking. I really don't. I feel fine in front of a group of people or in front of the camera or whatever. But I can already imagine the embarrassment from stuttering and unable to present my work. When I tell people about my stutter, they say they never notice it or are dumbfounded and look at me weird. But knowing that I am going to stutter makes me quiet and more introverted than I already am, which is impacting my social life, too. Also, I want to share one final thing. I do have some issues and pent up emotions, and a couple of days ago, I had a "breakdown" and opened up to a friend of mine and I did feel better. I also noticed I was relaxed and confident more, but regarding this topic, I feel like I didn't stutter as much these few days. I really appreciate any response, thank you.