Got COVID around Christmas. I don't know which variant. It went as a regular flu for 3-4 days, then 2 days feeling better and thinking I am recovering. 6-th day getting fever again, lots of sweating, heart rate up to 90 from 65, feeling bad for 3-5 days. Apart from aspirin and vitamins I started taking Cefuroxime for 5 days (not sure if the latter was 100% necessary, some doctors prescribe it, some not). At day 9 got another examination. Chest x-ray and cardiogram normal, body temperature still high (38C / 100F), heart rate still high, blood pressure normal. Starting to feel much better around day 14, but still not feeling recovered and heart rate was around 80. At day 20 most symptoms were gone, but still got a bit higher heart rate than usual, and some residual coughing, esp when doing some light to moderate physical activity.
Now that more than a month has passed since initial symptoms, I still feel that my heart and blood circulation is not back to normal and I am a bit afraid to exercise. I only do some walks on a moderately steep trail and some stretching.
I don't know if this counts as a long covid, but definitely it feels a lot different than a regular flu. It looks like most of the damage is first done to your blood circulation system and then that harms some other organs. I hope that circulation system will fully recover, but I don't know how much time it would take. Other people told me that it took them 2-3 months to feel back to normal.