O2 level was 82-86/ Oxygen level was like 84 or 86 so she was put on oxygen; inflammation in the lower lungs that was rubbing on her diaphragm; Pneumonia; Cough/bad cough/dry cough; Stomach pain/top part of her stomach would hurt/stomach was hurting right at the bottom of her rib cage; gastroenteritis; short of breath; she wasn't breathing deep; feels like she doesn't have any energy; feeling bad; nauseated/felt sick to stomach; ate about half of her breakfast, this lasted for several days, she wouldn't eat much; This is a spontaneous report from a contactable consumer (patient's husband) via Pfizer.  This consumer reported similar event for two patients. This is the first of two reports.  A 59-year-old female patient received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot number: EN6206, expiry date: unknown), via an unspecified route of administration, on 09Mar2021, as single dose, for COVID-19 immunisation. Medical history included exposure to SARS-COV-2 on 02Mar2021 (reported as "daughter tested positive for COVID on 02Mar2021, patient had been around their daughter and their daughter's husband, they went out to eat with them on the night of 02Mar2021"). Concomitant medication included esomeprazole sodium (NEXIUM) taken for an unspecified indication, start and stop date were not reported. On 09Mar2021, the patient received her first shot. About 20 minutes after she took the shot, she started feeling bad and became nauseated/felt sick to stomach. On 09Mar2021, the top part of her stomach would hurt, and she started developing a cough. On 11Mar2021, the patient felt like she doesn't have any energy. The coughing went pretty bad so on 12Mar2021, the patient took a COVID-19 PCR test and it came back negative. The patient kept having a bad cough so then they went to the doctor where they put the patient on prednisone 20 mg and amoxicillin 875 mg on 12Mar2021. On 16Mar2021, the patient went to the family doctor and the doctor put the patient on azithromycin and gave her a steroid shot. Then the patient kept coughing and her stomach was hurting right at the bottom of her rib cage. The patient was never getting better or anything. So, on 18Mar2021, the patient had COVID-19 Virus test where they swabbed her nose and the test came back negative. The patient was taken to the hospital on 19Mar2021 at 11:30 where they did an x-ray of the patient's lungs and her O2 level was 82-86 sitting in the bed (also reported as 84-86 so she was put on oxygen), performed CT scan of her lungs and it looked like there was inflammation in the lower lungs that was rubbing on her diaphragm, and performed Chest CT which determined pneumonia. That night they did another COVID-19 virus test where they went really deep and it came back negative. The patient was admitted to the hospital on the night of 19Mar2021. The patient was given IV ceftriaxone, IV azithromycin, azithromycin (also reported as Zythromax), one breathing treatment, and they said they may have to send the patient home with some oxygen. It was also reported that on 19Mar2021, the patient did really good with coughing, she didn't cough that much. The patient had a dry cough that wasn't productive at all. The patient acted kind of short of breath because she wasn't breathing deep because of the pain in the top part of her stomach, but the reporter doesn't believe it was true shortness of breath. When the patient got out of the hospital on 22Mar2021, she didn't need to come home with the oxygen. The patient's oxygen level is running pretty good at the time of the report, in the lower 90s (Mar2021). The patient was on Decadron 6 mg for 5 days and she's doing pretty good, she still has a little bit of a cough. It was also reported that in Mar2021, the patient only ate about half of her breakfast, this lasted for several days, she wouldn't eat much. The patient pretty much recovered from the nausea. When she ate, it felt like everything would make it to her stomach and just sit there. The emergency room doctor said it could be from gastroenteritis, also they gave the patient several rounds of Protonix. The patient usually takes Nexium every night. The doctor felt that this event could very well be from the vaccine. The reporter asked if the patient could get the second shot on 30Mar2021. The patient was recovering from "Cough/bad cough/dry cough", "Stomach pain/top part of her stomach would hurt/stomach was hurting right at the bottom of her rib cage", and "O2 level was 82-86/ Oxygen level was like 84 or 86 so she was put on oxygen"; has recovered from "nauseated/felt sick to stomach" on an unspecified date. The outcome of the events "inflammation in the lower lungs that was rubbing on her diaphragm", pneumonia, "feeling bad", "ate about half of her breakfast, this lasted for several days, she wouldn't eat much", "feels like she doesn't have any energy", "gastroenteritis", "short of breath" and "she wasn't breathing deep" was unknown.; Sender's Comments: Linked Report(s) : US-PFIZER INC-2021329963 Same reporter, drug and event; different patient