Horrific nightmares, really bad, violent, and weird; Woke up screaming twice last night; Nausea; Pain; Sweats; Vomiting; Feels cloudy; Weak and tired; Weak and tired; Pain in back on left side, cannot walk; Back ache; night sweats; Deathly sick; This is a spontaneous report received from contactable reporter(s) (Other HCP) from medical information team. The reporter is the patient.  A 68 year-old female patient received bnt162b2 (COMIRNATY), administered in arm right, administration date 29Dec2021 (Batch/Lot number: unknown) at the age of 68 years as dose 2, single for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: Bnt162b2 (first dose, lot number unknown, time: 12:30, Anatomical Location: right arm), administration date: 08Dec2021, when the patient was 68 years old, for Covid-19 immunization, reaction(s): "Pain in back on left side, cannot walk", "Deathly sick", "Back ache", "Vomiting", "Nausea", "Pain", "Sweats", "Feels cloudy", "Weak and tired", "Weak and tired"; Flu vaccine vii, administration date: Nov2021, for immunization. The following information was reported: ILLNESS (non-serious) with onset Dec2021, outcome "unknown", described as "Deathly sick"; NIGHTMARE (non-serious) with onset 30Dec2021, outcome "unknown", described as "Horrific nightmares, really bad, violent, and weird"; NAUSEA (non-serious) with onset 29Dec2021, outcome "unknown", described as "Nausea"; PAIN (non-serious) with onset 29Dec2021, outcome "unknown", described as "Pain"; HYPERHIDROSIS (non-serious) with onset 29Dec2021, outcome "unknown", described as "Sweats"; BACK PAIN (non-serious) with onset Dec2021, outcome "unknown", described as "Back ache"; VOMITING (non-serious) with onset 29Dec2021, outcome "unknown", described as "Vomiting"; FEELING ABNORMAL (non-serious) with onset Dec2021, outcome "unknown", described as "Feels cloudy"; ASTHENIA (non-serious), FATIGUE (non-serious) all with onset Dec2021, outcome "unknown" and all described as "Weak and tired"; GAIT INABILITY (non-serious) with onset Dec2021, outcome "unknown", described as "Pain in back on left side, cannot walk"; SCREAMING (non-serious) with onset 30Dec2021, outcome "unknown", described as "Woke up screaming twice last night"; NIGHT SWEATS (non-serious) with onset Dec2021, outcome "unknown", described as "night sweats". Therapeutic measures were not taken as a result of illness, nightmare, nausea, pain, hyperhidrosis, back pain, vomiting, feeling abnormal, asthenia, fatigue, gait inability, screaming, night sweats. Additional information: the caller had her first dose of the Pfizer Covid 19 Vaccine on 08Dec2021 and it made her deathly sick.  She got her second dose on 29Dec2021 and now has a back ache, horrific nightmares, feels cloudy, is weak and tired, and has pain in her back on the left side and cannot walk. The caller placed emphasis on the nightmares, saying they were strange and violent and she woke up screaming twice last night. Transferring agent has referred the caller to the caller's primary care provider. The caller's husband was on the phone stating that he had been talking to someone at Pfizer and got disconnected; the husband then handed the phone over to the patient. Caller comes onto the line and verifies information received from the transferring agent.  Caller stated that she had experienced night sweats and vomiting.  Stated the only different symptom she had experienced between the first and second vaccine was the really bad nightmares. Stated she couldn't close her eyes without the nightmares starting right up.  Stated the nightmares were violent, bad and weird. Caller stated that nothing had changed for her other than getting the vaccines. Caller stated that the nightmares began last night.  States that the vomiting, nausea, pain, and sweats started the night before. Caller denied any other medications, medical conditions, labs, testing, or treatments relevant to these events. The events were not required a visit to emergency Room or physician Office. Patient's Medical History (including any illness at time of vaccination) was none. The seriousness criteria for symptoms the patient responded only by saying no.   The lot number for bnt162b2 was not provided and will be requested during follow up.