diarrhoea; vomited twice; she was not breathing good; feel funny; horrible migraine; had chills; couldn't sleep; hot flashes; felt a little achy; she felt tired; feeling not a lot of energy; This is a spontaneous report from a contactable consumer (patient). A 63-year-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Batch/Lot Number: FA7484), dose 2 via an unspecified route of administration, administered in Arm Left on 17Aug2021 (at the age of 63 year) as dose 2, single for COVID-19 immunization. Medical history included None. There were no concomitant medications. The patient previously took BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Lot No. FA7484), dose 1 via an unspecified route of administration in Left arm on 27Jul2021 at 10:30 (at the age of 63 year) for COVID-19 immunization and experienced Body aches/felt achy and tired for a couple of days; and had diarrhea for a couple of days. That was just a few days of feeling very tired and then she was fully recovered. On 17Aug2021, consumer started to feel funny, then in the evening she had a horrible migraine; it was so bad; she had chills, and she was up during the night, couldn't sleep. She took Tylenol late at night, but it still was not going away. She was feeling like hot flashes, and she was up from the bed to the couch. Adds it felt like the top of her head was coming off. Adds she also felt a little achy but the chills were the thing. She took some more Tylenol in the morning and still couldn't sleep and didn't feel good. She was really having the chills and on 18Aug2021, she vomited twice and so she called her doctor and spoke to the nurse who talked and listened. Adds she didn't know if she had a fever because the thermometer was not working. She threw up twice more on the phone with the nurse, then she started feeling like she was not breathing good; not enough air; adds she had noticed that earlier in the morning. She couldn't tell if she was stressed; but after she threw up she felt more like she could not get enough air; and so she ask her husband to take her to the hospital. After she was released from the emergency room, on an unspecified date in Aug2021, she felt tired; feeling run down a few days later. She also had Diarrhea on 27Aug2021. Clarified she was really tired and feeling not a lot of energy for about two days, then fully recovered. Consumer was treated in the emergency for eight hours and then went home. Adds she was on IV and they did other tests on her as well. Added the nurse left her a voice message saying that she should be looked at. Added it didn't seem like her body was accepting it. On an unspecified date in 2021, they did the COVID test, and she thought she was supposed to know in three days and after six days she called, and they had a spill of the samples on the way to the lab so she went in and was tested again and it was negative. Consumer took Tylenol late at night for her horrible migraine; but it still was not going away. She took some more Tylenol in the morning and still couldn't sleep and didn't feel good. The outcome of events was recovered on an unspecified date in 2021.  Follow-up attempts are completed. No further information is expected.