Long Covid

Hello everybody! Today I woke up with extreme difficulty in breathing and very persistent cough. I had just gotten a negative Covid result 3 days back and was relieved that this time I wasn't ill for that many days, like the first time I got Covid, cause it was forbidding me from going back on track with everything. So I was positive this time everything was better , but the dyspnea really alarmed me and the doctor told me I got long Covid, and those are post Covid symptomes that might take a while to cease. Does anyone have been through a similar thing? How long did it take you to recover? I also have some migraines and a little bit of fever, like 37,4°. I have to get back to work and start working out again, because I'm in need of the money and I need to exercise as it helps with my ms and my health in general.