extreme pain in his stomach with swelling and bloating; painful to breath because his abdomen was swollen/ extreme pain in his stomach with swelling and bloating; Dry heaves; painful to breath because his abdomen was swollen; sciatica to hurt and aggravated his lower back pain; sciatica to hurt and aggravated his lower back pain; hip pain; The pain was high up under his rib cage; Stomach discomfort; tenderness at the injection site; Diarrhea; This is a spontaneous report from a contactable consumer (patient). A 46-years-old male patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE; Solution for injection; Lot Number: EN6204; Expiration date: unknown), via an unspecified route of administration, administered in arm left on 13Mar2021 at 11:00 (at the age of 46-years-old) as dose 1, single for COVID-19 immunisation at hospital. Medical history included systemic herpes zoster infection (disseminated varicella zoster virus infection), ongoing HIV infection (he has been positive for HIV for 30 years) and previously had hip injury. Concomitant medications included bictegravir sodium, emtricitabine, tenofovir alafenamide fumarate (BIKTARVY) taken for HIV infection from an unspecified start date and ongoing (taking for 3 years); aciclovir sodium (ACYCLOVIR [ACICLOVIR SODIUM]) taken for disseminated varicella zoster virus infection from an unspecified start date and ongoing (taking for 6 years). There was no history of any previous immunization with the Pfizer vaccine considered as suspect and no prior vaccinations within 4 weeks. The patient did not receive any additional vaccines on same date of the Pfizer suspect. There was no family history. The patient experienced tenderness at the injection site on 13Mar2021, diarrhea, stomach discomfort on 13Mar2021 at 18:00, extreme pain in his stomach with swelling and bloating, dry heaves, painful to breath because his abdomen was swollen, sciatica to hurt and aggravated his lower back pain, hip pain, the pain was high up under his rib cage on 14Mar2021. Patient stated recently had the Pfizer COVID 19 vaccine on Saturday and had some side effects that he had not read about. The patient clarified that he received the first dose of the Pfizer COVID 19 vaccine 13Mar2021 at 11:00 AM in the left arm. He reported that there was a little tenderness at the injection site, but it was no big deal. Then at 18:00 he noticed some stomach discomfort and had one episode of diarrhea. Then at midnight he woke up with extreme pain in his stomach with swelling and bloating. He couldn't stand up with the pain, it was at his limit. He added that his roommate wanted him to go to the emergency room, but he didn't want to go to a rinky dink hospital in the middle of the night, so he stayed home. Stated that he started to have dry heaves and brought up some fluid then it was just violent dry heaves then finally he was able to bring up air. It was painful to breath because his abdomen was so swollen, and he felt like he was exhaling forcefully. The pain was high up under his rib cage. This all continued until around noon on Sunday when air finally came up. He laid on his stomach on a heating pad and by afternoon he was better; by Sunday evening the swelling had mostly subsided. Patient stated that when he had the swelling and bloating it felt hard up under his rib cage. It pushed his ribcage out of position and caused his sciatica to hurt and aggravated his lower back pain. Mentioned he had a previous hip injury and the swelling that caused his back to be out and also caused hip pain. He further stated that his stomach was still irregular and making noises. And then at the time of this report, stated that he could do his usual stretches. Mentioned he got an email from the hospital and he reported his symptoms to them, but this was the first time to call Pfizer. He was scheduled to receive the second dose on 05Apr2021. He asked what to do to prepare for the second dose. The adverse events did not require a visit to physician or emergency room. The patient did not undergo relevant test. The outcome of the events tenderness at the injection site, diarrhea was resolved on 13Mar2021; events of extreme pain in his stomach with swelling and bloating, dry heaves, painful to breath because his abdomen was swollen was resolved on 14Mar2021 and outcome of rest of the events was resolving.  No follow-up attempts are possible. No further information is expected.