I just want to ask someone about my condition

Hello Reddit, I wanted to ask something: Why do I feel like I can't breathe properly when I talk, needing to take deep gasps? I also have a slight stutter and difficulty pronouncing certain sounds like the letters d, t, and s.

I've been to many doctors, but they couldn't give me a proper diagnosis.

I've done a lot of research but can't find anything similar to my case.

Also, my mom said I had asthma as a child, but it went away.

My condition started at the age of 12. It was mild at first, just a few stutters, but now, as an 18-year-old, I feel like I can't have conversations with strangers because of it.