Strange brain fog; forgotten her medications at home, she forgot to do something with her dogs that she usually does; was pretty sure she forgot to brush her teeth; Right arm soreness; This is a spontaneous report from a contactable nurse (patient). A 31-year-old female patient received 1st dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot# EJ1685), intramuscularly in right arm on 18Dec2020 11:00 at single dose for Covid-19 immunisation. Medical history included ulcerative colitis from 2018 and ongoing, birth control from 2018 and ongoing, seasonal allergies from an unknown date and unknown if ongoing, multivitamin (supplementation therapy) from an unknown date and unknown if ongoing. Concomitant medication included HPV vaccine on 11Dec2020, mesalazine (LIALDA, exp: 29Sep2021, Manufacturer: Zydus) from 2018 and ongoing for ulcerative colitis, cetirizine hydrochloride (WAL ZYR, exp: Dec2021, NDC: 0363049547) from 2018 and ongoing for seasonal allergies, probiotics (lot# 20540N0, exp: Apr2022, Company: Seed.) from 2018 and ongoing, fluticasone propionate (Nasal spray, strength: 50 ug, lot# RR7350, exp: Apr2022) from 2018 and onoging for seasonal allergies, ascorbic acid, biotin, calcium pantothenate, calcium phosphate dibasic, colecalciferol, cupric oxide, cyanocobalamin, ferrous fumarate, folic acid, manganese sulfate, nicotinamide, phytomenadione, potassium iodide, pyridoxine hydrochloride, retinol acetate, riboflavin, selenium, thiamine mononitrate, tocopheryl acetate, zinc oxide (FORVIA, tablet, lot# B0115, exp: May2023, UPC: 835134000202) from 2018 and ongoing for multivitamin, ethinylestradiol, ferrous fumarate, norethisterone acetate (LO LOESTRIN FE, exp: Nov2021, barcode:04300420149) from 2018 and ongoing for birth control, and turmeric (exp: Feb2023, barcode #:074312803673) at 1000 mg daily from 2018 and ongoing. The patient previously received tetanus vaccine 10 years ago. The patient experienced right arm soreness on 18Dec2020,"strange brain fog" on 21Dec2020, she was not sure if it was a reaction to the vaccine, because it was not in the packet that it has been reported; but she wanted to ask if brain fog had been reported. She further described that the brain fog included having forgotten her medications at home, having had a really weird day, she forgot to do something with her dogs that she usually does; was pretty sure she forgot to brush her teeth; and she had a needle stick at work with Heparin after administration of Heparin to patient (little mark on her left middle finger from the needle stick). She had already given the patient the Heparin, then the needle stick to her left middle finger happened after dose to patient was administered the full dose on 21Dec2020. She did not think there was any Heparin left when she got the needle stick; if so it was very very small amount. She washed the needle stick site out really vigorously for 5 minutes, wrapped the site, it was not bleeding or anything; She reported having recovered completely from this event probably 21Dec2020; but clarified that the only lasting effect she has had from this event was since yesterday there is a little mark on her left middle finger from the needle stick; but there is no pain, no swelling and no redness. The hospital drew her blood and the Heparin patient's blood 21Dec2020. She did not notice any of the brain fog or related events on 20Dec2020, not until onset on 21Dec2020. She did not know if these brain fog related events were a side effect of the COVID-19 Vaccine. She felt fine otherwise. She knew that the actual COVID-19 virus had brain fog. She received the tetanus vaccine 10 years ago. The patient received the HPV vaccine a week before the COVID one. She planned on getting the second dose as scheduled, no changes made. Brain fog: She thought she recovered completely by about 21Dec2020. It was better. She had not really done much as of report date. Forgotten her medications at home: These medications were her concomitant products. The outcome of right arm soreness was recovered on 20Dec2020, the other events was recovered on 21Dec2020.