This has been a symptom of stress and anxiety for me for my whole life so it is nothing new. I know I’m getting enough oxygen but it’s just a feeling of chest tightness and inability to get a satisfying breath. However it has gotten worse in the last week since I upped my Zoloft dose from 25 mg to 50 mg 6 days ago. I was taking 25 mg for a week before that without this issue. I have heard many people say this is a side effect of going into medication but I’d like to hear others experience and when it lifted. Thanks