My Mum (88yrs old) has had COPD for many years. She has had Covid twice - last time March 2022! 2 weeks ago she had her fifth Covid injection. A week later she has started having breathing problems & palpitations resulting in a severe panic attack & a trip to hospital; where they gave her a complete check up (ECG, Blood Tests, Chest XRay) Nothing presented itself. Has anyone else had a reaction to the Covid booster? If so...how long did symptoms last?