Nauseous; a low grade fever of 100; Really bad body aches; Exhaustion; Vomiting; Unable to balance body temperature; feeling very flu like; chills; burning feeling in her stomach; Arm pain; Body is rejecting food and water/unable to eat or drink anything; ome arm pain at the injections site yesterday where she received the shot; It has been about 16 hours since she had a drink of water; face hurts; She has been mixing between sweating; being super hot and freezing; muscle cramps; She has been in and out of sleep/She slept heavy through the night; every limb is hurting; This is a spontaneous report from a contactable consumer (patient). A 30-year-old female patient received bnt162b2 ((PFIZER-BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Lot Number: ER8733), dose 2 via an unspecified route of administration, administered in Arm Right on 11Apr2021 09.35 (at the age of 30-year-old) as single dose for COVID-19 immunization. The patient had no medical history that was too crazy important. The patient had no family medical history relevant to AE(s), other than a history of cancer and stuff like that. Currently no one in her immediate family has cancer nor does she. Nothing that stands out. There were no concomitant medications. The patient had no additional vaccines administered on same date of the Pfizer suspect. The patient takes the occasional Advil for headache but no prescription meds. She takes nothing weird and no pain killers. The patient previously received first dose of bnt162b2 ((PFIZER-BIONTECH COVID-19 mRNA VACCINE, Lot: EN6207), via an unspecified route of administration, administered in Arm Left on 24Mar2021 (at the age of 30-year-old) for COVID-19 immunization. The patient had no prior vaccinations (within 4 weeks) and no AE(s) following prior vaccinations that she knows of. The patient experienced symptoms after her second shot of the Pfizer BioNTech Covid-19 Vaccine. She was reading through the packet given to her and saw to report symptoms or experiences. She seems to be having all of the symptoms with the exception of difficulty breathing or a few more serious mortal ones that would send her to the hospital if she had those. She has shown no signs of improvement. She was unable to eat or drink anything. Her body had rejected food and water, and she was starting to get concerned. She was not sure if she should self report to the ER. It had been about 16 hours since she had a drink of water. She was not sure if that's a side effect, the vomiting and all that. She wasn't expecting it, its crazy. The patient has had vomiting. She had been nauseous since she woke up this morning (12Apr2021). She had some arm pain at the injections site last day (11Apr2021) where she received the shot, but last day there was nothing else other than arm pain then this morning (12Apr2021), she woke up at 0700 EST with severe nausea, feeling very flu like and a low grade fever of 100. She had been unable to balance her body temperature. She had been mixing between sweating and being super hot and freezing. Walking and any sort of movement was exhausting. The vomiting came when she tried to take Tylenol, drink water, and eat a slice of toast. She was unable to do so. As far as moving it felt like her entire arm hurts. She had really bad body aches. When she rolls over and lays on her arm that received the injection there was a bruised feeling but not a single point of pain by itself. She had nausea right when she woke up. She slept heavy through the night, so she did not wake up with any nausea in the night, it was when she woke up naturally. It was accompanied by heaving, muscle cramps, and a burning feeling in her stomach, probably because she was hungry. The vomiting was 2 separate incidents, both when she tried to drink water and eat some toast. She had a low grade fever of 100, but that was several hours ago, she had not taken her temperature recently. Her head felt warm to her hand, but she could not tell if that was a normal temp or not. As far as the body aches her face hurts, every limb was hurting, it was like a really bad flu. Bending her legs or moving her arms took effort and was painful. Body aches started this morning when she was getting out of bed it did not feel right. She confirmed she was exhausted, it was really difficult for her to stay awake. Last day (11Apr2021) she was a normal tired at the end of the day. On 12Apr2021, it was hard to sit up in bed and she just wanted to sleep. She had been in and out of sleep. She has had general chills and sweating that started a few hours after she woke up. She was taking off sweat shirt putting it back on, like she can't regulate her temperature. It was taking longer to have the sweaty and chill spells. She was kind of petering off a sweaty spell and was not freezing yet. It was probably a bit better considering it was cycling so fast and now it's taking a bit longer. Her arm pain was right after getting the vaccine. The nausea, vomiting, body aches, low grade fever, and rejecting food began in the morning around 7am when she woke up. Being unable to balance her body temperature started a few hours later. Referred caller to her primary physician for medical advice and the emergency room for any symptoms that become urgent. The AE(s) did not require a visit to Emergency Room and Physician Office yet, If it doesn't improve it most likely will visit Emergency Room. The patient did not undergo any relevant tests, she was just stuck in bed, nothing had been done. Outcome of the events arm pain, unable to balance body temperature was recovering; nauseous, body ache, exhaustion was not recovered; other events was unknown.  No follow-up attempts are needed. No further information is expected.