Exposure during pregnancy; Sore arm; This is a spontaneous report from a contactable consumer or other HCP (Patient) via Pfizer-sponsored program reported for both mother and foetus. This is a mother case. The mother reported she was pregnant while taking BNT162B2 .  A 28-year-old (pregnant) female patient received her first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Batch/Lot number: EJ1685) via an unspecified route of administration on 08Jan2021 and second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Batch/Lot number: EJ1685) via an unspecified route of administration on 27Jan2021 (at the age of 28-year-old) as single dose for COVID-19 immunisation. The patient medical history included induced labour, live birth-induced at 38.5 weeks for gestational hypertension- no other complications, Ehlers-Danlos syndrome (Father Side- sister has Ehlers-Danlos syndrome), mast cell activation syndrome (maternal aunt-Mast cell activation, none on mother side), alcohol use. Prenatal vitamins (once a day) from Oct2020. Concomitant medication included meclizine HCl (25 mg once/day) taken for nausea, motion sickness (car sick) from 27Dec2020 to 20Jan2021. The patient was 12 weeks pregnant (off label use, product use issue) on 08Jan2021. She was wondering if data was being collected, she knows that pregnant women cannot be studied for ethical reasons and was happy to be a part of any data sharing. The mother was 12 weeks pregnant at the onset of the event. In the first trimester of pregnancy, the patient was admitted to the hospital due to exposure during pregnancy and was fine later. Estimated due date was 08Feb2021 and for the first dose she was 10.5 weeks pregnant and for the second 13.5 weeks. She had no side effects except for a sore arm (pain in extremity) and so far no complications in her pregnancy. No other products were taken together. First day of last menstrual period was 25Oct2020, estimated date of conception was 10Nov2020 and estimated delivery date was 02Aug2021. The mother did not smoke, use illicit drugs nor drink alcohol during this pregnancy. Number of previous pregnancies were one and number of other children were one. History of sub-fertility included live birth-induced at 38.5 weeks for gestational hypertension, no other complications. No treatment for infertility, Negative results for serology tests and on 16Jan2021, first ultrasound showed all normal, left ovary-corpus luteum cyst. No problems before pregnancy. No drugs were taken by the father during the mothers pregnancy. The father did not smoke nor used illicit drugs but drank alcohol socially during the mother's pregnancy. Outcome was unknown for all the events.    Information about lot/batch number has been requested.  Follow up (12Feb2021): This is a follow-up spontaneous report from a contactable nurse. This 28-year-old female nurse reported in response to Non HCP letter sent which included lot number, adverse events, pregnancy due date.  Follow up (16Feb2021): This is a follow-up spontaneous report from a contactable nurse. This nurse reported in response to Non-HCP EDP follow-up questionnaire sent which included pregnancy information and drug details.