she still feels a little haziness in her brain; feeling a little dizzy and off balance; constipated/Constipation; Painful; chills and dizziness; chills and dizziness; temperature went up to 101.8; back pain; the first and second dose of the Pfizer Covid vaccine, taken 12 days apart; the first and second dose of the Pfizer Covid vaccine, taken 12 days apart; This is a spontaneous report from a contactable consumer (patient). A 64-year-old female patient received second dose of bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, solution for injection, Batch/lot number: EN6206, Expiry Date: Not Reported), via an unspecified route of administration, administered in Arm Right on 22Mar2021 (at the age of 64-year-old) as dose 2, single for covid-19 immunisation. The patient medical history and concomitant medications were not reported. The patient previously took first dose bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, solution for injection, Batch/lot number: Not Reported, Expiry date: Not Reported) via unspecified route of administration, administered in left arm 10Mar2021 (at the age of 64-year-old) as dose 1, single for covid-19 immunisation. The patient had second dose on 22Mar2021 that is 12 days after the first dose(10Mar2021), which is an off-label use and inappropriate schedule of product administration. On 24Mar2021, the patient experienced, constipated/constipation, painful, feeling a little dizzy and off balance. On 23Mar2021, the patient experienced, chills and dizziness, temperature went up to 101.8, back pain. On an unspecified date she still feels a little haziness in her brain. The patient had taken the first and second dose of the Pfizer Covid vaccine, taken 12 days apart, the patient wants to know whether the 12 days is too short of a time between the two doses and if it diminishes the efficacy of the vaccine. The patient her other question is, she has had a bunch of side effects, most of which she has seen on the website, stated he had one that she hasn't read, extreme constipation, stated it was so painful. As a Treatment gave herself an enema and got some magnesium sulfate, stool softener, senna tea. Stated she was working on this for hours. Stated it worked, that it is too early to tell if it is completely resolved. The patient experienced chills and dizziness, that she had a fever, treatment for fever- she took acetaminophen and ibuprofen, stated she had some back pain for which she took 5mg of Flexeril, the patient clarified she does experience back pain sometimes from an old, herniated disc before the vaccine that becomes inflamed, which is what this feels like. Stated this morning she woke up feeling a little dizzy and off balance and that she still feels a little haziness in her brain, not sure if it has improved or she has just gotten used to it. The patient stated she heard that if you are healthy that the second dose can have more side effects, not sure if this is true. Stated her doctor warned her in a back handed way to not to go to the place she went to for her Pfizer vaccine, stated at this location, there was no social distancing, there were herds of people, it scared her, stated she got a surprise call that a different location had the Pfizer vaccine so she made an appointment to get her second dose there, got the second dose only 12 days later, stated now she has two patient cards, one from each location. Stated the location of the second vaccine, that was a whole different experience, stated it was like heaven. That she wants to file an official complaint about the first location, the patient stated if she goes back home, that she is a citizen there, want to see that she has had two doses, wondering if they will accept two different cards. The patient stated she has pictures of the difference between the vaccination sites.The patient underwent lab tests and procedures which included body temperature: 101.8 (temperature went up to 101.8) on 23Mar2021. Therapeutic measures were taken because of constipated/constipation, painful, chills and dizziness, temperature went up to 101.8, back pain. Outcome of the event temperature went up to 101.8 was recovered in 24Mar2021, for event she still feels a little haziness in her brain was unknown and for rest all events the outcome was recovering.  No follow-up attempts are needed. No further information is expected