I'm really concerned about my husband. He tested positive for COVID-19 back on May 17, 2021, and it's been over three months since then. On May 24th, a CT scan showed he had 25% lung involvement. He was on oxygen support for a month and got discharged on June 22, 2021, so it's been about two and a half months now. His oxygen level is around 98-99 when he's just sitting, but when he does brisk walking or climbs stairs quickly, his breathing gets faster for a couple of minutes, and then settles back down. During this time, his oxygen saturation levels drop to about 89-93 for a few seconds before going back up to 99 and staying there. Is this something we should be worried about? Also, he sometimes gets a dry cough a few times a day and feels a mild chest pain then. His respiratory rate is around 20-22 bpm. Are these symptoms normal or is there something we should be looking into? I'm really anxious about all this.

no need to worry, its normal