Out of breath??

Is anyone else as out of breath as I am? It doesn't matter whether I'm trying to walk, if I'm sitting, talking, I CANNOT BREATH. Trust me, I know he's running out of room in there bc he's all in my ribs every day. But geez. Last week at the dr she asked me if I had started back smoking bc my O2 sats were really that low, which I didn't think anything of at the time (but I plan to ask next week about this). I'm not gonna make it 9 more weeks like this 😳😩