Brief Answer: The problem may not be in your lungs. Detailed Answer: I am not a lung specialist; however, if your oxygen saturation is 99% and testing and PE are reassuring, it is time to look elsewhere. Are you taking any medications? Are you using some form of contraception? If this is anxiety related, it should be better when you take a medicine for acute anxiety. Do you have a medicine to take if panic attacks occur? Also, hormones can affect the respiratory drive center. Progesterone is highest in pregnancy, just before menses and elevated by some contraceptives. It can cause the symptoms you describe. It doesn't mean anything is wrong, it is a normal physiological response and passes when estrogen levels rise. If you can do all your normal activities and not wheeze or struggle to breathe, I think you can be reassurred and not worry further.

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Brief Answer: Yes hyperfocus on breathing can cause this feeling Detailed Answer: It may be time to consider resuming zoloft. The trap of modern antidepressants is as follows. When a person is matched with the right medication of this type, side effects are minimal, and many patients tell me that they feel more and more like their normal self. One day he or she looks at the pills and says, "I feel fine. Why I am taking this?" Zoloft is an inexpensive effective medication. Long term cumulative side effects and complications are uncommon. It is not toxic. It acts by helping your own neurochemical, seratonin, to breakdown slower and act longer. It is a very natural and specific mechanism. I hope that you feel better soon and my answer assists you.

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