vertigo happening every time she is standing up; left arm where she got the injection, it feels very heavy; not feeling good; left ear is stuffed up; cough; is POTS one of the regular side effects; blood pressure is low; her heart rate jumps up from laying down to sitting or standing up; lot of phlegm  and cough; congestion/very stuffy; feeling run down/feeling tired/extremely tired/feeling tired; little fever; Sinus infection; Dehydration; Dizziness; Headache; This is a spontaneous report from a contactable pharmacist. A 31 years old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 MRNA VACCINE), dose 1 via an unspecified route of administration, in Deltoid Left (at the age of 31 years old) on 30May2021 (between 12 and 3 early afternoon) (Batch/Lot Number: EW0153; Expiration Date: 31Jul2021) as DOSE 1, 0.3 mL, single for covid-19 immunization. Medical history included von Willebrand  s disease from an unknown date and unknown if ongoing (diagnosed age 9 or 10 at the time suffering from dizziness, feeling not good, and she had anxiety problems, the patient had multiple tests they found a blood disorder). No other vaccines were given within 4 weeks. Historical Vaccine includes INFLUENZA VACCINE in 2017 and 2018 at the Age: 27 and 28 sick for 3 to 4 days with flu like symptoms, and the patient had that twice. There were no concomitant medications. The patient experienced dizziness (disability) on 30May2021, dehydration (medically significant) on Jun2021, feeling run down/feeling tired/extremely tired (disability) on 03Jun2021, vertigo happening every time she is standing up (disability, medically significant) on an unspecified. headache (non-serious) on 30May2021 to 30May2021, little fever (non-serious) on 03Jun2021, not feeling good (non-serious) on an unspecified date, sinus infection (non-serious) on Jun2021, left ear is stuffed up (non-serious) on an unspecified date, left arm where she got the injection, it feels very heavy (medical sig) on an unspecified date, cough (non-serious) on an unspecified date, is pots one of the regular side effects (non-serious) on an unspecified date, blood pressure is low (non-serious) on an unspecified date, her heart rate jumps up from laying down to sitting or standing up (non-serious) on an unspecified date, congestion/very stuffy (non-serious) on 03Jun2021, lot of phlegm and cough (non-serious) on an unspecified date. The patient underwent lab tests and procedures which included Investigations: On an unspecified date in Jun2021 Bloodwork for (anemia, Red blood cell analysis, Thyroid function test normal) all results was normal (Investigations: the patient had 3 sets of bloodwork, the last yesterday, and they could not find anything, they ruled out like thyroid, anemia, RBCs, they said was normal); On an unspecified date Blood test revealed severely dehydrated; On an unspecified date blood pressure is low. Therapeutic measures were taken as a result of dizziness dehydration, Vertigo happening every time she is standing up and, sinus infection. The clinical course was reported as follows patient received the first dose on 30May2021, and the only side effect was a little bit of Dizziness and headache started 30 to 45 minutes after the first dose, and it went away, and in 3 days the patient was fine. Headache was there that day, and has not been a problem since. Tuesday (date unspecified) she experienced dizziness, she was off keel a little. She had a little fever and was feeling run down. Fever started 03Jun2021 about 4 days after the vaccine, and stayed probably about a day or two and went away, and has not been a problem since. Feeling run down 03Jun2021, started 4 days after the vaccine, the patient couldn  t tell if it was the vaccine, or from her trying to do too much, and the patient didnt rest, but it seems it could be the vaccine compounded from not resting. By Friday, Saturday, and Sunday, she was feeling tired, a whole 9 days after the vaccine was given, the first dose, she was feeling run down, but that was about it, she was able to do normal chores, like running around, and by Monday, which puts at now 10 days after the vaccine, she is not feeling good, and very extremely tired, and dizziness, the dizziness was setting in and is aggravated ever since; however she was diagnosed 3 days later with a sinus infection and dehydration Jun2021 (Patient was told she could be dehydrated because of the sinus infection.), she was given an IV at the hospital (later clarified in the ER). She was given IV fluid, did bloodwork and said she was severely dehydrated, the patient was told to go home and hydrate, and cut out, caffeine as the patient thought it made dizziness worse, That same night, she had a bout of dizziness take over her, and the patient was taken to the ER again, for a second time, 6-7 days after the first ER visit, and during that visit they said she is no longer dehydrated, but they wanted her to take something for the dizziness, said Antivert (later clarified as meclizine) would work, so they gave it in the ER, and it seemed to make it better, but it didnt go away, and the patient was discharged and all her vitals were good, she had no dehydration, was sent home with meclizine and the next morning the patient went to the PCP and the PCP said she was dehydrated, and to follow up again, and on Monday, that was 3 days, she was not dehydrated it was also reported   and the patient called her PCP about 5 to 6 days ago, and her bloodwork is ok. She was on 10 days of antibiotics, and she ended up in the ER again because of vertigo happening every time she is standing up, so basically, the patient is still having dizziness and complaining about not being able to do work, Dizziness happens when the patient sits or stands; caller would say this is disabling, as the patient cannot do daily functions, ironing or whatever. She is feeling too dizzy and afraid to fall. Caller stated the patient had a sinus infection and was given Augmentin. Caller reported the patient saw an ENT. There was a lot of phlegm and cough, and it subsided within 2 to 3 days, but the dizziness is still there the whole time and tiredness, the dizziness remains. Since 10 days, the patient had dizziness, then a bout of vertigo, and is still run down, patient is lying in bed for 2 weeks now, when she gets up, she is spinning, and the patient has been able to go to her PCP, but is very slow due to dizziness. The dizziness seems to not be going away, and the patient  s ear is very stuffy like if someone put a cotton ball in it, the stuffiness is constantly there, and today she said, the arm where the shot was given, for 2 weeks it was very heavy, no pain, but very heavy, she has sensations and 3 days today she has extreme heaviness in the arm from the shoulder to the elbow. Caller states Arm heaviness is serious, not disabling, but the patient said the best way to say, is like someone pulling her arm down, but no pain, dizziness when she stands or sits, and caller was reading about side effects, she was thinking there were a few instances of POTS, and the patient saw a cardiologist today, saw her PCP yesterday. The patient postponed the second dose. Pharmacist inquired if POTS one of the regular side effects, and can she get better, also, since the patient has not had the second vaccine, will the effect, will the first dose wean over 3 weeks, caller thought the first dose would wean so the patient would feel better. The clinical outcome of the event dizziness, fatigue was not recovered, headache recovered 30May2021, fever, lot of phlegm and cough recovered Jun2021.   Verbatim event relatedness per reporter: Pfizer COVID vaccine: little fever Related, feeling run down Related and left arm where she got the injection, it feels very heavy Related.   Follow up attempts are possible. Further information is expected.; Sender's Comments: The  causal association of reported serious events in relation to suspected drug BNT162B2 cannot be totally excluded based on event occurrence and timing of drug administration.  The impact of this report on the benefit/risk profile of the Pfizer product is evaluated as part of Pfizer procedures for safety evaluation, including the review and analysis of aggregate data for adverse events. Any safety concern identified as part of this review, as well as any appropriate action in response, will be promptly notified to regulatory authorities, Ethics Committees, and Investigators, as appropriate