Started with a raging throat on Wednesday. It felt really grainy and kept me awake all night then the high temperature came on then few hours later aches and pains. Cough came one yesterday. My scalp feels really tender aswell. I’ve done a lateral flow which was negative. Did a pcr yesterday and it’s come back negative. Really surprised I haven’t got covid. Could there be a mistake. Trying to stay away from my son just in case.