ive been feeling rough all week and today my chest feels tickly when i breath. It’s the only way I can describe it and it makes me cough. Checked my oxygen this afternoon and it fluctuates between 93-98 but settles on 94/95. My usual oxygen is 98/99. I’m meant to be working tomorrow and going to be tricky to calll GP. But if pulse oximeter does occasionally move to 98, does that mean it’s okay?