Have/had a mild Bronchitis-like feeling in my lungs. But have/had no difficulty breathing despite that. No shortness of breath. The feeling sometimes goes away, but them later resurfaces.
To the best of my knowledge I have not lost lung capacity. I can mow the lawn (.3 acre) with a push mower in 1 go without stopping in hot weather.
Had a mild headache and mild sore throat at the height of it. Body was mildly achy in the evening near/at bed time. Occasional cough near the tail end of the recovery. For me this was not a cough heavy sickness.
No medication used. Lifted weights throughout the entire process. Symptoms were very mild but lasted forever.
Overall my personal symptoms were mild enough that I was not suffering. This is not to downplay. Other people have strange effects, such as "covid toes" where the flesh in their toes die. Or their immune system reacts causing inflammation in the lungs with serious damage to tissue. One bad thing about new viruses is a strong immune system can sometimes bite you. It was a big issue in the 1918 flu that was most deadly to people in their 20's. Elderly were relatively untouched by the 1918. Luckily Covid-19 has not proven to be particularly dangerous to young people so far. But it is causing bad immune responses in some young people, even if not at a large scale like the 1918 virus.
