not feeling well/don't feel well; Got sick; chills; throwing up; fatigue/feeling fatigued; This is a spontaneous report from a contactable consumer (patient's mother) reported for a patient. A 55-year-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Formulation: Solution for injection, Lot Number: unknown, Expiration date: unknown) via an unspecified route of administration, administered at an unspecified anatomical location on 23Apr2021 (age at vaccination was 55 years) as 1ST DOSE, SINGLE DOSE for COVID-19 immunization. The patient's medical history and concomitant medications were not reported. The caller stated that her daughter was handicapped and was going through menopause. The caller stated that she and her daughter received their first injections 3 weeks ago to the day. They were supposed to get their second vaccine today but weren't feeling well and didn't know if it had right to the day or could they wait a few days out to get it. Caller stated they were not sick from the vaccines, just weren't feeling well. They both received their first Pfizer Covid vaccine doses on 23Apr2021. They were both due for their second doses today, 14May2021, but they both didn't feel well, and she wanted to know if she can postpone her second dose and for how long. The caller stated that she was feeling fatigued, had a heart condition, was experiencing nausea because her MD was taking her off certain medications. She stated her daughter was handicapped, feeling fatigued, and was going through menopause. On PRD 19May2021, it was reported that the caller stated that she received the first dose of Pfizer Covid-19 vaccine 3 weeks and 4 days ago (can't remember the exact date, but confirmed it already passed the 3 weeks period) and has a scheduled second dose due after 3 weeks, they missed the second dose schedule because got sick few days prior the scheduled date of second dose and can't remember where they got their first dose. She wanted to ask for an appointment to get their second dose. Asked if they can still have an adverse effect after 3 weeks of receiving the first dose. On PRD 19May2021, it was reported that the caller stated that she got her first dose of the Pfizer COVID 19 vaccine together with her daughter and could not remember when the second dose was. Agent said she thought it was already passed the 3 week period. They calculated it and it should have been 30Apr2021, that is when the second dose should have been but the caller couldn't remember where she got first dose. She also mentioned her daughter got sick a few days before she was scheduled to get the second dose. She had called to get scheduled for the second dose because they still had not received it. On PRD 23May2021, it was reported that the caller stated that she was wondering her daughter and she had been experiencing some illness they didn't know if it's a flu or it's a possible side effect adverse effect from the injection. The consumer stated that they both had the same shoot and with their second dose their first dose was a month ago and with that everything was fine, so she didn't know if they were having side effects now with our second dose or it's a flu that's what she wanted to know if some people have the symptoms. On PRD 23May2021, it was reported that reporter stated that the reason she had called she thought her daughter was experiencing adverse reaction and she just wanted to know is this the common symptoms. The reporter further stated that she was wondering if she was having an adverse reaction or side effect, she can tell them the symptoms that were happening and then they can tell her if that was something that people were experiencing. They had their injection on Friday and last night she started to feel chills and started to throw up (further details unknown) and today her daughter started feeling chills and throwing up and asked whether that was the side effect. The reporter added that they transferred her to different department and she was getting very frustrated and she didn't know whether she should she take her daughter to emergency room. In response to further probing, reporter stated that her daughter was sick, she didn't want to take time to answer the question. The outcome of the events was unknown.  Information on the lot/batch number and Additional information has been requested.  Follow-up#01(PRD 14May2021), Follow-up#02(PRD 14May2021), Follow-up#03, #05 (PRD 19May2021), Follow-up#04(PRD 19May2021), Follow-up#06(PRD 23May2021), Follow-up#07(PRD 23May2021): New information received from a contactable consumer (patient's mother) reported for patient included: Updated the case as valid, added new events, details regarding vaccination and clinical course.