I had the Pfizer vaccine nearly 4 weeks ago and am still not right. I had a few days of being shivery and noticeably very tired. I now feel fine sitting down, working, etc, but every time I try to do something active, even a short walk, I am finding that I feel physically very tired, very quickly - like my legs won't work properly and I am wading through mud. I am also struggling at my usual pilates and yoga classes - very low energy. It occurred to me that this could be related to my vaccine - has anyone else experienced this? I am normally in good health, but am hyper mobile which can cause fatigue if I overdo it - I am definitely not overdoing it though!