horrible burning feeling like a lit candle in the lower intestines and fire in stomach/ felt like she was on fire, body was on fire inside her body; red bumps on my right arm/red bumps in little clusters, cluster of red dots; diarrhea; stomach upset; severe stomach pain; flushed cheeks across her nose/cheeks flushed for 1 hour; my cheeks turn pink; brain fog/felt very loosie; Fatigue/tired; little sore arm/minor sore left arm; This is a spontaneous report from a contactable consumer (patient) via medical information team. A 70-year-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, formulation: Solution for injection, Batch/Lot Number: EN6205, Expiry Date: Jun2021), via an unspecified route of administration, administered in left arm on 25Feb2021 16:30 as single dose for covid-19 immunisation. Medical history included GERD/gastrooesophageal reflux disease, high cholesterol, ongoing high blood pressure, breast cancer and had radiation for that in 1992, high triglycerides, thyroid removal in 2007, stroke 2012, ongoing oxygen therapy (24 hours a day for 3 years) and allergies to neglect and wheat. Patient was not pregnant at the time of vaccination. Concomitant medications included levothyroxine sodium (SYNTHROID) she takes it because she has no thyroid; acetylsalicylic acid (ASPIRIN (E.C.)) 325 mg for high blood pressure; salbutamol (ALBUTEROL HFA), omeprazole, fenofibrate, atorvastatin, lisinopril, latanoprost. She had things wrong with her and she was on several medication beside the oxygen. She had to take a 325 mg of 'Bayer Aspirin' (not clarified) every morning because she had stroke in 2012. She takes at night she takes some eye drops, her eye doctor gave so that she does not get Glaucoma. 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. She received normal medications for high blood pressure, fenofibric, within 2 weeks of vaccination. The patient previously received influenza vaccine (FLU) shot for immunization and she has never had a reaction. Patient was nervous about receiving the vaccine because she was on oxygen therapy 24 hours a day in addition to being on a number of medications which include: medication for high blood pressure, Synthroid, Aspirin 325mg every morning, and "a couple of things for breathing" such as Albuterol and Respimat inhaler "which helps you get rid of carbon dioxide from your lungs." She just expresses concern because "her body is compromised." She saw on TV that the CEO of Pfizer was discussing the possibility of a third booster shot. Patient was scheduled for next shot on 25Mar2021. She got first Pfizer dose on 25Feb2021 around 4:30 in the afternoon on Thursday, and when she got the first dose cheeks got really pink and they stayed like that for an hour or so and then they went away and she thought it was okay for her to (incomplete sentence). She had all different ones, the first one started right away, as soon as she got the shot she felt very 'loosie' (Not clarified) about 20 minutes later when she was sitting there and waiting. Then when she got, she noticed her cheeks were really pink. Some went away about an hour. Then she had some fatigue and a little sore arm for the next 48 hours but she was okay. But then on 28Feb2021 (yesterday) 48 hours after the shot, suddenly she had diarrhea, very violently and then that was last night and she was so having it and she felt like she was on fire, she felt like her body was on fire inside her body, and she kept drinking." She had pills she had to take every day. No she took nothing. When she had the diarrhea over night from last night almost 48 hours all night long she had diarrhea couple times, and she had diarrhea this morning. She felt like somebody lit a match inside her body and it's like burning from inside, and started drinking water. On continuous home O2, takes synthroid and lisinopril. She experienced flushed cheeks across her nose which lasted a few hours. The first 48 hours she had a minor sore left arm, fatigue, and brain fog. At 48 hours after the vaccine administration, she had to take lisinopril and 5 mins later she experienced violent diarrhea. Later that night felt "fire inside my body like someone had lit fire" started drinking water, "eventually it went away. She called to ask if it was ok to take peptobismol. On 01Mar2021 (Today) she felt way better. She experienced quite a lot of side effects after getting the 1st dose. She said that she was not easy going up. After she got home, she mentioned that her cheeks flushed for 1 hour. She gets flushed usually but this was more pink than usual which went through her nose. The flushing was not hot and swollen. She also experienced horrible burning feeling like a lit candle in the lower intestines and a fire in the stomach 4 days later after the diarrhea on 04Mar2021. She was advised to take Pepto-bismol and water for that and she was fine. She was very tired, fatigued, and her brain was foggy for 4-5 days. She also mentioned that she took some of her high blood medications which made her stomach upset but she ensured to take it with food the next time and it did not happen again. It was challenging and was a wild day. It's been 8 days since and she has mentioned that she's okay now and is breathing better than she usually does, especially on 05Mar2021 (today). She also feels that she has more stamina, improvement in her lungs. She said that it was very strange but she is very happy and is wonderful. She has been on Oxygen for 24 hours a day for 3 years and is more at risk for COVID. She is asking if this is normal and for what to do with the 2nd dose. She was advised to refer to healthcare provider for further discussion. As soon as she had the shot, her cheeks turn pink and she couldn't see it until she got home because of the mask and she does not know if cheeks were pink because of the mask or what but it was only lasted for short time and then went away. She did not have any swelling or heat or anything but when she started, she had very few symptoms except fatigue. Then on the third day or fourth day, she started with diarrhea and a very severe stomach pain and now in the last couple of days she started with these red bumps on my right arm in Mar2021." She had the shot on left arm but has these red bumps in little clusters, cluster of red dots, you can feel them and they are raised up and she does not know if something bite her or if this a side effect. It has been several weeks now. It was on shoulder in two different places and it is kind of like three or four of them at one location. "Now, my cheeks are pink again and it has been two weeks now. She does not understand why. She should not be having any side effect at all and she was all (voice feeble) twenty-four hours a day. No treatment received for the adverse events. Since the vaccination, the patient had not been tested for COVID-19. The outcome of events stomach pain, stomach upset was not recovered; for other events was unknown.  No follow-up attempts are needed. No further information is expected.