I've Been Having These Weird "episodes" With What I Believe

I've been having these weird "episodes" with what I believe to be my trachea. It happens predominantly when I lay down, and it's like it 'pops' out of place. It makes it hard and painful to breathe, and I have to physically push it back into place in order for it to stop. I know it's nothing life-threatening, but I'd just like to know what is happening.