Heavy headache; joint pain; muscle aches; diarrhea; nausea; sore arm and underarm(lymph node are); my heart does feel as if it's pounding harder; It's actually a migraine.; booster; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient. A 34 year-old female patient (not pregnant) received bnt162b2 (BNT162B2), administered in arm left, administration date 30Nov2021 16:00 (Lot number: FJ8757) at the age of 33 years as dose 3 (booster), single for covid-19 immunisation. The patient had no relevant medical history. Concomitant medication(s) included: IRON. Vaccination history included: Bnt162b2 (Dose Number: 2, Batch/Lot No: EW0170, Location of injection: Arm Left, Vaccine Administration Time: 04:00 PM), administration date: 25Apr2021, when the patient was 33 years old, for COVID-19 Immunization, reaction(s): "sore arm", "tiredness"; Bnt162b2 (Dose Number: 1, Batch/Lot No: ER8734, Location of injection: Arm Left, Vaccine Administration Time: 08:30 AM), administration date: 02Apr2021, when the patient was 33 years old, for COVID-19 Immunization, reaction(s): "sore arm", "tiredness". The following information was reported: IMMUNISATION (non-serious) with onset 30Nov2021 16:00, outcome "unknown", described as "booster"; HEADACHE (non-serious) with onset 01Dec2021 11:30, outcome "unknown", described as "Heavy headache"; ARTHRALGIA (non-serious) with onset 01Dec2021 11:30, outcome "unknown", described as "joint pain"; MYALGIA (non-serious) with onset 01Dec2021 11:30, outcome "unknown", described as "muscle aches"; DIARRHOEA (non-serious) with onset 01Dec2021 11:30, outcome "unknown", described as "diarrhea"; NAUSEA (non-serious) with onset 01Dec2021 11:30, outcome "unknown", described as "nausea"; PAIN IN EXTREMITY (non-serious) with onset 01Dec2021 11:30, outcome "unknown", described as "sore arm and underarm(lymph node are)"; PALPITATIONS (non-serious) with onset 01Dec2021 11:30, outcome "unknown", described as "my heart does feel as if it's pounding harder"; MIGRAINE (non-serious) with onset 01Dec2021 11:30, outcome "unknown", described as "It's actually a migraine.". Therapeutic measures were not taken as a result of headache, arthralgia, myalgia, diarrhoea, nausea, pain in extremity, palpitations. Therapeutic measures were taken as a result of migraine.  Additional info-Patient reported that she did not receive any other vaccines within 4 weeks prior to the COVID vaccine.Prior to vaccination, the patient was not diagnosed with COVID-19 and Since the vaccination,  the patient  had not been tested for COVID-19.It was also reported that after  1st and 2nd dose patient had almost no side effects. Just a sore arm and tiredness. The following day After  3rd dose, she got a very heavy headache, joint pain, muscle aches, diarrhea, nausea, sore arm and underarm(lymph node are) And my heart does feel as if it's pounding harder. On the 2nd day after she felt almost normal. On the 3rd day, the headache returned. It's actually a migraine. I suffer from migraines from time to time. This one came in full force and it is still present. 3 days later. She had  been taking Motrin/Migraine for relief which helps slightly, but it returns at full force at night and in the morning. The migraine does concern me because her migraines have not Lasted this long No follow-up attempts are needed. No further information is expected.