very tight in her airway; felt absolutely horrible; inflammation; booster shot/ had Pfizer for first and second vaccine, this is her third; booster shot/ had Pfizer for first and second vaccine, this is her third; Hard time breathing; bad chills; aching pain shooting all the way down her leg into her ankle and into her feet and then she was having other pain shooting through the parts of her body; pain shooting all the way down her leg into her ankle and into her feet; pain shooting all the way down her leg into her ankle and into her feet; severe migraine; muscles are spasming/ muscle cramping; muscle are twitching everywhere randomly in her body; This is a spontaneous report from a contactable consumer (patient). A 34-year-old female patient received BNT162B2, via an unspecified route of administration, administered in arm left (left bicep in the middle) on 01Oct2021 13:10 (Batch/Lot Number: 301458A), at the age of 34 years old, as dose 3 (booster), single for COVID-19 immunisation. Medical history patient battling a lung condition that's why she was immune compromised, has damage in right lung from this lung condition that she has for over two years. Patient on three antibiotics for it and was also on wait for bronchoscopy. Concomitant medication included antibiotics. The patient previously received first and second dose of BNT162B2 on unspecified dates. She had Pfizer for first and second vaccine, this is her third and every time she reacted to it; she reacted very bad. The patient had her booster shot and at that point had reacted badly to Pfizer every single vaccine. She just knew that what she ended up going through was so intense, not normal. She literally felt like she took poison, felt absolutely horrible. On 01Oct2021 (03:00), the patient was having a hard time breathing today like ever since everything is flared up in my body from this vaccine, it's very tight in her airway and her inhalers (unspecified) were not working. On 01Oct2021 (03:00) The patient was having really bad chills, crazy like body temperature change her face, looks like ice cold like had her face in fridge. Also reported crazy aching pain shooting all the way down her leg into her ankle and into her feet and then she was having other pain shooting through the parts of her body; it feels like she got shot in the legs, like not normal - all since 3 am "last night" it's all started and it was so painful she could barely move and she have a severe migraine growing down into neck and was having like her muscles are spasming, often her neck in shoulder above her arm where she got the injection and was having muscle cramping like twitching like muscle are twitching everywhere randomly in her body, it happen every single time she got Pfizer vaccine (as reported) and this was the first time with Pfizer vaccine that she noticed she was having a hard time breathing. Treatment in response to adverse event included patient taking a muscle relaxant. She was taking naproxen (ALEVE). She also literally just started taking steroids because she was having a hard time breathing and she has been taking her emergency inhaler more - and that's pretty important. Patient had done blood works and had a CT chest (Unknown results). She has damage in right lung from this lung condition, and there was inflammation (as reported) that's why bronchoscopy, they need to get a 'culture' to know what it was, so they can know what medicine they can switch patient to. Outcome of events were unknown.  Follow-up attempts are completed. No further information is expected.