on Sunday, 11Apr2021, she was freezing. She said she was so cold she couldn't get warm; her stomach was bloated; the right side of her belly had a sharp pain on sitting or standing; the right side of her back, she has had a sharp pain on sitting or standing; she had vertigo, like a sea sick feeling; if she moved her head to the left, or to the right too quickly, she felt nauseous; her left hand started to hurt/ the bottom of her left arm started to hurt; she had a pressure in the back of her head; dull headache at the back of her head; she was really tired/ Fatigue; her ears were clogged, as if she was on a high mountain; her eyes were glossy, like she was getting sick; provided 31Mar2021 as her first COVID-19 Vaccination dose date and 05Apr2021 as her second COVID-19 Vaccination dose date; She felt so uncomfortable, and it had been a whole week since she got her second COVID-19 Vaccine; asked if anyone had reported brain fog after the COVID-19 Vaccine. She was asking herself what she was doing while in the middle of doing something (like she forgot what she was doing); she had dropped 2 mugs during last week, and was very clumsy; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 52 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 05Apr2021 13:15 (Lot number: ER8734, Expiration Date: 31Jul2021) at the age of 52 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "Colon cancer" (unspecified if ongoing), notes: she had colon cancer when she was 40 years old; "Hysterectomy", start date: 2020 (unspecified if ongoing), notes: she had a full hysterectomy in 2020. The patient's concomitant medications were not reported. Vaccination history included: Bnt162b2 (Vaccine Lot Number: EN6207, Vaccine Lot Expire Date: 31Jul2021, Anatomical Location of Administration : left arm), administration date: 31Mar2021, for COVID-19 Immunization. The following information was reported: INAPPROPRIATE SCHEDULE OF PRODUCT ADMINISTRATION (non-serious) with onset 05Apr2021, outcome "unknown", described as "provided 31Mar2021 as her first COVID-19 Vaccination dose date and 05Apr2021 as her second COVID-19 Vaccination dose date"; VERTIGO (non-serious) with onset 07Apr2021, outcome "not recovered", described as "she had vertigo, like a sea sick feeling"; ABDOMINAL DISTENSION (non-serious) with onset 09Apr2021, outcome "not recovered", described as "her stomach was bloated"; ABDOMINAL PAIN UPPER (non-serious) with onset 09Apr2021, outcome "not recovered", described as "the right side of her belly had a sharp pain on sitting or standing"; BACK PAIN (non-serious) with onset 09Apr2021, outcome "not recovered", described as "the right side of her back, she has had a sharp pain on sitting or standing"; HEAD DISCOMFORT (non-serious) with onset 06Apr2021, outcome "unknown", described as "she had a pressure in the back of her head"; HEADACHE (non-serious) with onset 06Apr2021, outcome "unknown", described as "dull headache at the back of her head"; FATIGUE (non-serious) with onset 06Apr2021, outcome "unknown", described as "she was really tired/ Fatigue"; EAR DISCOMFORT (non-serious) with onset 06Apr2021, outcome "unknown", described as "her ears were clogged, as if she was on a high mountain"; NAUSEA (non-serious) with onset 07Apr2021, outcome "recovered" (Apr2021), described as "if she moved her head to the left, or to the right too quickly, she felt nauseous"; PAIN IN EXTREMITY (non-serious) with onset 07Apr2021, outcome "unknown", described as "her left hand started to hurt/ the bottom of her left arm started to hurt"; FEELING COLD (non-serious) with onset 11Apr2021, outcome "unknown", described as "on Sunday, 11Apr2021, she was freezing. She said she was so cold she couldn't get warm"; DISCOMFORT (non-serious) with onset Apr2021, outcome "unknown", described as "She felt so uncomfortable, and it had been a whole week since she got her second COVID-19 Vaccine"; FEELING ABNORMAL (non-serious) with onset Apr2021, outcome "unknown", described as "asked if anyone had reported brain fog after the COVID-19 Vaccine. She was asking herself what she was doing while in the middle of doing something (like she forgot what she was doing)"; CLUMSINESS (non-serious) with onset Apr2021, outcome "unknown", described as "she had dropped 2 mugs during last week, and was very clumsy"; GLASSY EYES (non-serious) with onset 06Apr2021, outcome "unknown", described as "her eyes were glossy, like she was getting sick". Therapeutic measures were taken as a result of vertigo, abdominal distension, abdominal pain upper, back pain, head discomfort, headache, fatigue, ear discomfort, nausea, pain in extremity, feeling cold, discomfort, feeling abnormal, clumsiness, glassy eyes.  Additional Information: The patient stated she had taken Tylenol PM last night. She said she was at work and didn't have the Tylenol PM bottle to provide the dosing, NDC, Lot, and Expiration Date. The patient reported now she didn't feel nauseous. Reported when she spoke to the nurse at the COVID-19 Vaccination facility on Sunday, 11Apr2021, she was freezing. She said she was so cold she couldn't get warm. She said she had told the nurse at the COVID-19 Vaccination facility about her symptoms since she got her second COVID-19 Vaccine. She said the nurse told her since her symptoms were going on 7 days, she should report the symptoms to Pfizer. She also reported she had no current medical issues. Reported she was supposed to get blood work every year for her cancer (follow-up), and she hadn't done that recently. Caller asked if anyone had reported brain fog after having the COVID-19 Vaccine. Caller clarified she found she was asking herself what she was doing while in the middle of doing something (like she forgot what she was doing). She said she had dropped 2 mugs during last week, and was very clumsy. She said her husband suggested to her that possibly her equilibrium was off. She said her symptoms were so weird, and didn't happen right away. She said all her symptoms happened gradually.  No follow-up attempts are possible. No further information is expected.