Have had two doses of Pfizer, and went to London for half term visit. On getting home a few days ago have been flat out in bed with exhaustion, feel sick when I eat, shivery legs and feel cold and headaches at front of head. My eyes feel small like when you're ill (does that make any sense) snd I just want to be in bed. It's not like me at all. I've been sneezing a bit but no cold has actually come out. It's like the beginning of one but not actually progressing. I feel really viral and unwell. My chest feels a bit heavy and like there's a catch on it when I breathe now. But I am eating and clearly not that bad. I've done 3 LF tests and all clear. Does this sound familiar to anyone? I'm sure it's just run of the mill but also wondering given the people who have it but tested negative.