Upper back muscle pinched; Lower belly pain, to the point it woke me up at 2am; Lower belly pain; Sinus pressure; Woke up with a serve headache, pulsing in temples and a lot of tension. They prescribed me naproxen and tension headache medication which helps takes the edge off; Headache. I woke up with a serve headache, pulsing in temples and a lot of tension; Sore arm; This is a spontaneous report from a contactable consumer, the patient. A 27-year-old non-pregnant female patient received first dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Lot Number: FC3183) via an unspecified route of administration in the left arm on 03Sep2021 at 12:15 (at the age of 27-years-old) as a single dose for COVID-19 immunisation. The patient had no medical history and no known allergies. Prior to the vaccination, the patient was not diagnosed with COVID-19. Concomitant medications taken within two weeks of vaccination included norethisterone (NORETHINDRONE) at a dose of 0.35 mg for an unknown indication from an unknown date and unknown if ongoing. The patient did not receive any other vaccines within four weeks prior to the vaccination. The patient received her first dose of Pfizer on 03Sep2021, and experienced a headache and sore arm, within a couple of hours of injection. All symptoms resolved within a day or so. On 07Sep2021 at 06:00, the patient woke up with a serve headache, pulsing in temples and a lot of tension. The patient officially went into urgent care on 17Sep2021 and was diagnosed with sinus pressure and was asked to take loratadine (CLARITIN) for the pressure. On 21Sep2021, the patient had lower belly pain, to the point it woke her up at 02:00. The patient took paracetamol (TYLENOL) and went back to sleep. By morning it was simmered but was sensitive to push. The patient contacted her Obstetrics and Gynaecology (OBGYN) office due to lower belly pain. On 25Sep2021, her menstruation arrived and it was explained to have played a part in her headaches and tension. On 28Sep2021, the patient went back to urgent care and was diagnosed with upper back muscle pinched, they gave her ketorolac tromethamine (TORADOL) shot which seemed to take the edge off. They prescribed her naproxen (MANUFACTURER UNKNOWN) and unspecified tension headache medication which helped "take the edge off." On the day of report, the patient was still battling some tension and headaches and since then had to seek chiropractor care. The reported events resulted in doctor or other healthcare professional office/clinic visit. The events sinus pressure and upper back muscle pinched also resulted in doctor or other healthcare professional office/clinic visit, emergency room/department or urgent care. Therapeutic measures were taken as a result of the events and included treatment with CLARITIN for sinus pressure, TYLENOL for lower belly pain to the point it woke her up at 02:00 on 21Sep2021, TORADOL shot on 28Sep2021 and naproxen for upper back muscle pinched and along with unspecified tension headache medications. It was unknown whether therapeutic measures were taken as a result of the events headache that started on 03Sep2021, sore arm; serve headache, pulsing in temples and a lot of tension. Since the vaccination, the patient had not been tested for COVID-19. The clinical outcome of the event sore arm was resolved on an unspecified date in Sep2021. The clinical outcome of the events upper back muscle pinched was resolving whereas that of headache, serve headache, pulsing in temples and a lot of tension was not resolved at the time of this report. The clinical outcome of the events sinus pressure and lower belly pain to the point it woke her up was unknown at the time of this report.