on 6th day experienced high heart rate (118) when moving (normally in the 90's); Shortness of breath shortly before bedtime; Normal aches; Fatigue; This is a spontaneous report from a non-contactable consumer, the patient. A 64-year-old non-pregnant female patient received second dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Lot number: Er2623) via an unspecified route of administration in the left arm on 08Apr2021 at 13:30 (at the age of 64-year-old) as a single dose for COVID-19 immunisation. Medical history included insomnia other than that the patient was totally healthy and known allergies to some unspecified heartburn medications. Prior to the vaccination, the patient was not diagnosed with COVID-19. The patient did not receive any other vaccines within four weeks prior to the COVID-19 vaccine. Concomitant medications received within two weeks of vaccination included cimetidine (TAGAMET), naproxen sodium (ALEVE) and eszopiclone (LUNESTA); all for an unknown indication from an unknown dates and unknown if ongoing. Past drug history included: Pristiq, reaction(s): "allergies: Pristiq", notes: Known allergies: Pristiq; Codeine, reaction(s): "allergies: Codeine", notes: Known allergies: Codeine. The patient previously received first dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Lot number: unknown) via an unspecified route of administration in the left arm on 18Mar2021 at 13:45 (at the age of 64-year-old) as a single dose for COVID-19 immunisation. On an unknown date in Apr2021, the patient experienced normal aches and fatigue. On 14Apr2021 on sixth day, the patient experienced high heart rate of 118 when moving, normally its in the 90's and shortness of breath shortly before bedtime. Shortness of breath lasted about an hour and a half before the patient went to sleep and woke up with normal breathing. The events did not result in doctor or other healthcare professional office or clinic visit, emergency room or department or urgent care. No therapeutic measures were taken as a result of the adverse events. Since the vaccination, the patient had not been tested for COVID-19. The clinical outcome of the events normal aches, fatigue, high heart rate were recovered on an unknown date in Apr2021, while event shortness of breath was recovered on 14Apr2021.  No follow-up attempts are possible. No further information is expected.  Amendment: This follow-up report is being submitted to amend previously reported information:  "heartburn" captured as History per verbatim "Known allergies: Some heartburn medications". For Lab Data "Heart rate": New Result "90" added with comments "normally in the 90's". In consolidated narrative: "experienced drug allergy" missed for "The patient previously received codeine (MANUFACTURER UNKNOWN) and desvenlafaxine succinate monohydrate (PRISTIQ) for unknown indication on unknown dates and unknown if ongoing". Initial source information need review: adverse_event: Normal aches and fatigue but on 6th day experienced high heart rate (118) when moving (normally in the 90's) and shortness of breath shortly before bedtime. Lasted about an hour and a half before I went to sleep. Woke up normal breathing. adverse_event_start_date: 14Apr2021 adverse_event_start_time: 09:00 PM if_patient_recovered: Recovered  known_allergies: Codeine, some heartburn medications, pristique other_medical_history: Other than insomnia totally healthy