Lung pressure post childbirth

So I’ve had two kiddos, ages 2 & 5, so I’m not in the postpartum phase or anything, I’m also not pregnant, but I’ve been experiencing odd lung pressure literally since becoming pregnant with my first. It never has fully gone away, hasn’t gotten worse either, but all around, doesn’t seem normal. It’s a similar feeling as when you are super pregnant & can’t lay on your back cause otherwise you’ll feel suffocated. I have that weird pressure/decreased lung capacity feeling. It makes me feel like I have to cough after laying on my back for any length of time. I also get weird compressed feelings if I’m in random side laying positions. It’s hard to describe. Is this normal? Have my lungs like decreased or something? Does it have any connections with weight gain? What would you do? I’ve gotten pretty used to it & just lowkey accepted I’m damaged post kids, but idk if there could be any legitimate concern or ways to fix this. I don’t have any other weird things going on associated.

TIA

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