I had consistent lung and chest pain/Burning in chest; I had consistent lung and chest pain; felt minute burning; They said it is also normal for this number to be high when pregnant; This is a spontaneous report from a contactable consumer (patient). A 35-year-old pregnant female patient received second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Solution for injection; Lot number: EW0182 and Expiration date was not reported), via intramuscular route of administration, in right arm, on 19May2021 at 15:00 (at the age of 35-year-old), as a single dose for COVID-19 immunization. Patient was pregnant with a gestation period of 33 weeks and due date of 09Jul2021. The patient medical history included Chronic Lyme disease [Onset date: 10+yrs with Stop date: Ongoing], interstitial Cystitis [From 2019; Stop date: Off+ On; Pertinent details: Endoscopy in 2019], interstitial cystitis, seasonal allergies. Family history of the patient included high cholesterol (Dad) and High blood pressure (Mom). Concomitant medications received within 2 weeks of vaccination included Turmeric for inflammation (ongoing), Aloe Vera for Cystitis interstitial, Flonase for seasonal allergies, metformin for an unspecified indication (6 days Bef), lysine for skin (skin tightness), prenatal s (Oct2020) for Pregnancy, Iron for anaemia started in Feb2021 and was ongoing. Historical vaccine included first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Solution for injection; Lot number: EW0161 and Expiration date was not reported), via intramuscular route of administration, in right arm, on 28Apr2021 at 13:15 (at the age of 35-year-old), as a single dose for COVID-19 immunization. The patient 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 not been tested for COVID-19. On 21May2021 at 11:00 AM, the patient had experienced burning in chest and had consistent lung and chest pain that did not subside, when it would not go away and progressed to a 6-7/10 pain level patient decided to go to tinge emergency room with the advice of two different doctors. Patient took Flonase hoping it was her allergies. Pain persisted, so called both family Dr. and OB who both advise patient to visit to hospital. At hospital patient was admitted immediately and underwent many tests. Patient was tested high for something (can't remember what it was called) that indicated possible blood clot. They said it was also normal for this number to be high when pregnant. Everything turned out okay; no blood clot found. On 21May2021, the patient underwent test of Computed Tomography chest, angiography (chest), Electrocardiogram, Radiology chest 2-exam single view, Metabolic panel pulse OX, CBC Troponin Fibrin Degradation [checked for possible clot-high level of but normal in pregnancy], Thromboplastin Time Prothrombin time all with unknown results, Blood by vein puncture [result: abnormal] and pain level with a result of 6-7. Patient took 975 mg Tylenol and was sent home. Patient felt minute burning on 22May2021, but it was subsided by end of the day. Events resulted in emergency room/department or urgent care [Seriousness criteria: Hospitalization/Prolongation of hospital]-duration of stay in hospital was for seven hours. Patient received treatment with 975 mg Tylenol for chest pain and burning. Outcome of the events felt minute burning was resolved on 22May2021, consistent lung and chest pain/burning in chest were resolved on an unspecified date in 2021 and was unknown for exposure during pregnancy.  Information on Lot/Batch number was available. Additional information has been requested.