Heart rate was in the 140s; She was experiencing bad chest pain; Body aches; Fatigue/ So tired/ Exhausted/ Chronic fatigue; Fever; Didn't feel good at all; Was sleeping all of the time and didn't want to do anything; Was sick for 7 days; Her period lasted for 32 days all day/ she has not had another period since the end of March and she's not pregnant; This is a spontaneous report received from a contactable reporter(s) (Other HCP) from medical information team. The reporter is the patient.  A 44 year-old female patient (not pregnant) received bnt162b2 (BNT162B2), intramuscular, administered in deltoid left, administration date 29Dec2020 19:00 (Lot number: EJ1685) at the age of 44 years as dose 1, single and intramuscular, administered in deltoid left, administration date 29Dec2020 19:00 (Lot number: EL1284) as dose 1, single for covid-19 immunisation. The patient had no relevant medical history. There were no concomitant medications. The following information was reported: HEART RATE INCREASED (non-serious) with onset 30Dec2020 05:00, outcome "recovered" (2020), described as "Heart rate was in the 140s"; CHEST PAIN (non-serious) with onset 30Dec2020 05:00, outcome "recovered" (2020), described as "She was experiencing bad chest pain"; PAIN (non-serious) with onset Dec2020, outcome "recovered" (2021), described as "Body aches"; FATIGUE (non-serious) with onset Dec2020, outcome "not recovered", described as "Fatigue/ So tired/ Exhausted/ Chronic fatigue"; PYREXIA (non-serious) with onset Dec2020, outcome "recovered" (2021), described as "Fever"; ILLNESS (non-serious) with onset 2020, outcome "recovered" (2021), described as "Was sick for 7 days"; MALAISE (non-serious) with onset Dec2020, outcome "recovering", described as "Didn't feel good at all"; SOMNOLENCE (non-serious) with onset Dec2020, outcome "recovered" (2021), described as "Was sleeping all of the time and didn't want to do anything"; HEAVY MENSTRUAL BLEEDING (non-serious), outcome "unknown", described as "Her period lasted for 32 days all day/ she has not had another period since the end of March and she's not pregnant". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of pain, fatigue, pyrexia, illness, malaise, somnolence.  Additional information: The patient received the first dose of the Pfizer Covid-19 vaccine in Dec2020 around 7 p.m. she woke up about 5 a.m. the following day in which her heart rate was in the 140s and she was experiencing bad chest pain, her reaction was very scary, but she didn't go to the hospital. those symptoms resolved within a few hours and was better. she experienced the classic symptoms of body aches, fatigue, fever the next day and she was sick for 7 days, which she was tested for covid on the 7th day. The results came back negative. she was super fatigue which persisted on and off and she didn't feel good at all. she did not receive the second shot because the chest pain and chronic fatigue scared her. she was so tired, exhausted that she could not work out, and was sleeping all of the time and didn't want to do anything. her period lasted for 32 days all day. Caller states that she has not had another period since the end of March and it is now September. She also confirmed that she is not pregnant. Caller was asking if she should receive the second dose due to her reactions. when she had the body ache and stuff I took Tylenol and Ibuprofen. No follow-up attempts are possible. No further information is expected.