so I just got a booster shot; it felt like somebody hit me with the baseball bat, everything hurt; my temperature was 102.6; the fever came down for a bit and then it just goes up spike, goes down a bit, spikes again, currently I am at 101; wake up in the middle of the night just uncontrollably shaking with chills so bad that I had to get in a bath tub to stop the chills; wake up in the middle of the night just uncontrollably shaking with chills so bad that I had to get in a bath tub to stop the chills; this time it's much worse; I wake up in the middle of the night just uncontrollably shaking with chills; it felt like somebody hit me with the baseball bat,; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A patient (no qualifiers provided) received bnt162b2 (BNT162B2), administration date 16Dec2021 (Batch/Lot number: unknown) as dose 3 (booster), single for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: Covid-19 vaccine (Dose 1, MANUFACTURER UNKNOWN), for COVID-19 Immunization; Bnt162b2 (Dose 2), for COVID-19 Immunization, reaction(s): "with the second shot my lymph nodes have swollen in my armpit to the point I feel like they are too warm under my armpits.", "on the back of a bit my second shot I got fairly sick", "with the second shot my lymph nodes have swollen in my armpit to the point I feel like they are too warm under my armpits.". The following information was reported: IMMUNISATION (non-serious) with onset 16Dec2021, outcome "unknown", described as "so I just got a booster shot"; PAIN (non-serious) with onset Dec2021, outcome "unknown", described as "it felt like somebody hit me with the baseball bat, everything hurt"; PYREXIA (non-serious) with onset Dec2021, outcome "unknown", described as "my temperature was 102.6; the fever came down for a bit and then it just goes up spike, goes down a bit, spikes again, currently I am at 101"; TREMOR (non-serious), CHILLS (non-serious) all with onset Dec2021, outcome "unknown" and all described as "wake up in the middle of the night just uncontrollably shaking with chills so bad that I had to get in a bath tub to stop the chills"; CONDITION AGGRAVATED (non-serious) with onset Dec2021, outcome "not recovered", described as "this time it's much worse"; SLEEP DISORDER (non-serious) with onset Dec2021, outcome "unknown", described as "I wake up in the middle of the night just uncontrollably shaking with chills"; FEELING ABNORMAL (non-serious) with onset Dec2021, outcome "unknown", described as "it felt like somebody hit me with the baseball bat,". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of pain, pyrexia, tremor, chills, condition aggravated, sleep disorder, feeling abnormal.  Additional information: Consumer stated, patient was scanning your site and the FDA site and support, and it didn't come up with an answer for this, so patient just got a booster shot (Unspecified shot) on Thursday of this week and on the back of a bit patient's second shot patient got fairly sick and this time it's much worse. It had happened the second time too exactly 12 hours later I wake up in the middle of the night just uncontrollably shaking with chills so bad that patient had to get in a bathtub to stop the chills and my temperature was 102.6. And so, patient started with lot of fluids with Acetaminophen and Ibuprofen (Treatment). And it felt like somebody hit patient with the baseball bat, everything hurt and those are kind of known side effects from looking at your site. But this time as patient suppose to, with the second shot patient's lymph nodes have swollen in patient's armpit to the point patient feel like they are too warm under patient's armpits. And the fever came down for a bit and then it just goes up spike, goes down a bit, spikes again, currently patient at 101. Patient not allowed either patient had a cardiology appointment and patient's cardiology doctor said it was the worst chills he have ever had in his life and some other patient's too (further number of patients unknown, hence split case not made).   QR Comment: Reporter type could not be probed as the consumer hung up the call abruptly, hence captured by default as consumer or other non-health professional in tab.  The lot number for bnt162b2 was not provided and will be requested during follow up.