Very shortly after receiving the injection, my right arm/hand went numb and I had the feeling of pins and needles.; Very shortly after receiving the injection, my right arm/hand went numb and I had the feeling of pins and needles.; Very shortly after receiving the injection, my right arm/hand went numb and I had the feeling of pins and needles. The sensation traveled up my right shoulder, my neck, and made my scalp feel the numb/tingly.; Very shortly after receiving the injection, my right arm/hand went numb and I had the feeling of pins and needles. The sensation traveled up my right shoulder, my neck, and made my scalp feel the numb/tingly.; Very shortly after receiving the injection, my right arm/hand went numb and I had the feeling of pins and needles. The sensation traveled up my right shoulder, my neck, and made my scalp feel the numb/tingly.; Shortly after my right cheek/jawline went numb/tingly.; I also started cramping severely several hours later and started my period over a week early which is VERY abnormal for me as my periods have been like clockwork for years; I also started cramping severely several hours later and started my period over a week early which is VERY abnormal for me as my periods have been like clockwork for years; This is a spontaneous report from a non-contactable consumer, the patient. A 34-year-old non-pregnant female patient received the first dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Lot Number: FW0179) via an unspecified route of administration in the right arm on 14May2021 at 12:45 (at the age of 34-years-old) as a single dose for COVID-19 immunisation. Medical history included migraine. The patient had no known allergies to medications, food, or other products. Concomitant medications taken within two weeks prior to vaccination included rizatriptan benzoate 10 milligram (MAXALT), ibuprofen (MANUFACTURER UNKNOWN) and topiramate 75 milligram (MANUFACTURER UNKNOWN) all from unknown date for unknown indication. Prior to the vaccination, the patient was not diagnosed with COVID-19. Since the vaccination, the patient had not been tested for COVID-19. The patient did not receive any other vaccines within four weeks prior to the vaccination. On 14May2021 at 12:45, very shortly after receiving the injection, the patients right arm/hand went numb and she had the feeling of pins and needles. The sensation traveled up her right shoulder, her neck, and made her scalp feel the numb/tingly. Shortly after on 14May2021, the patients right cheek/jawline went numb/tingly. On 14May2021, the patient also experienced cramping severely several hours later and started her period over a week early which was very abnormal for her as her periods had been like clockwork for years. The events did not result in doctor or other healthcare professional office/clinic visit, emergency room/department or urgent care. No therapeutic measures were taken as a result of the events. The clinical outcome of the events right arm/hand went numb and had the feeling of pins and needles, the sensation traveled up right shoulder, neck, and made scalp feel the numb/tingly, right cheek/jawline went numb/tingly, cramping severely several hours later and started period over a week early was resolved on an unknown date in May2021.   No follow-up attempts are needed. No further information is expected.