2 x pfiezer + 1 pfiezer booster 3 weeks later covid positive (sick with symptoms)

I was looking to see if anyone would have an experience similar to mine. I had both pfiezer vaccines earlier than most then was in the first group of people to receive the booster (pfiezer) and had the flu vaccine about two weeks prior to the booster. A short time after the booster I slowly started to get (as in each day got worse) chestpains, muscle aches, headache, runny nose, felt the need to cough to breath out clearly, nausea and felt very very tired / exhausted. Got antibiotics and a few days later did antigen test for first time ever and got bright lines straight away. Went for pcr test same day (first time I have ever done one) and got a positive. 3 weeks have now passed and I have felt very ill every single day including the chest pains racing heart feelings that never really go. I have never had a chest infection or pneumonia ever in my whole life. Is there anyone else who has or is having this experience. At this stage it feels like I will never be a strong healthy person again I go to bed before 8pm sometimes even 6pm the days all seem to pass in a haze of sickness. The constant ache has not left my muscles or chest in all these weeks. Is there a clinic or specialist who deals with these types of cases without having to go through a hospital a&e which I really really do not want to do as I dont want to expose myself to more positive cases (viral load etc on my mind).