I'm really concerned about my wife. Back in 2020, she got Covid, and ever since then, she's been having these breathing issues. It's not constant but comes and goes, like she's fine for a few days, and then suddenly, she feels breathless with chest pain and heaviness. We've done all the testslike for asthma and chest X-raysand everything came back clear. We even tried an ayurvedic doctor who suggested it might be due to some cough in her chest, which he said was odd since the X-rays were normal. Strangely, his medicine seemed to help for a while. But now, the problem is back, and I doubt it's cough-related because she doesnt have a cold or fever. I'm at a loss and would really appreciate any suggestions or advice on what else we can do to figure this out. Could it be something post-Covid related that we're missing?