Do my lungs feel like they're being crushed before bed? Why and where does this come from?

Hello folks,

Unfortunately, I sometimes noticed that before going to bed at night, both of my lungs felt compressed or constricted, and it became harder to breathe. However, when I lay on my stomach, it worked. It took a while for me to get rid of that feeling.

Is this normal?

I haven't been diagnosed with COPD or asthma, and I don't smoke or vape anything.

Have you ever had these experiences?