I got the new Pfizer Vaccine on Saturday. It was #5 for me. I’ve been long hauling since November 2020 and with each vaccine I have hope it might trigger something to make me better. So far, none of the shots have changed my long haul symptoms. I had a much worse reaction to this vaccine than any of the previous ones. Sunday morning I ran a high fever and had extreme nausea and vomiting. Monday, the body aches and headache were just awful. Today I am able to work (I work from home) but I am completely exhausted. My POTS is back and my O2 is low. My husband thinks I had this reaction because I was already run down and that it might be due to PEM. Either way, I feel utterly defeated.