Any suggestion would help :/

Any suggestion would help :/ So most people when they stutter usually stutter amongst other people or in public but for some reason my stutter occurs mainly when I'm either really passionate and talkative in a conversation...or just naturally when I'm relaxed. I'm confused as I don't understand why my stutter begins to happen when there's literally no pressure on me to speak whatsoever. I use alot of insertions which makes me sound naturally tired to everyone else but I don't know why it occurs when I'm I can speak as freely as I like in my own home.