if the vaccine gave her Covid or if she had Covid in the winter and it brought Covid back.; Does it have the Flu virus in it where it could make the Flu come back if she had it before.; Diarrhea and cramping and all that came back; Diarrhea and cramping and all that came back; This is a spontaneous report from a contactable consumer.  A 61-years-old female patient received bnt162b2 (BNT162B2, Pfizer-BioNTech Covid-19 mRNA Vaccine, Solution for injection, Batch/Lot number EW0171), dose 1 intramuscular, administered in Arm Left on 29Jun2021 11:00 as dose 1, single for covid-19 immunisation (Age at vaccination 61 years). Medical history included myasthenia gravis mother has myasthenia gravis, diarrhoea the caller was severely sick in the winter with diarrhea for 8 months, illness the caller was severely sick in the winter with diarrhea for 8 months. The patient's concomitant medications were not reported. No other products, no patient history. Weighs 170-180 pounds. Additional Vaccines Administered on Same Date of the Pfizer Suspect none. No Prior Vaccinations (within 4 weeks). Patient Medical History (including any illness at time of vaccination) none. On an unspecified date in 2021 patient experienced if the vaccine gave her covid or if she had covid in the winter and it brought covid back, diarrhea and cramping and all that came back on 01Jul2021 17:00, does it have the flu virus in it where it could make the flu come back if she had it before. No Emergency Room visit or Physician Office. The patient underwent lab tests which included x-ray: unknown they didn't show any stones. She stated the doctor told her the shot will make her sick. He also told her that if she just got one dose of the vaccine she would be 50% protected against Covid. The caller asked if the second dose is easier than the first. She stated that since you already have it injected in our system it seems like you would already be used to it. Response: Read from the PI section 6 regarding comparison of reports of side effects after first vs second dose in the clinical trials. Explained that there are risks of side effects of the vaccine and that it would be a risk for either dose of the vaccine (referring to the fact sheet under "WHAT ARE THE RISKS OF THE PFIZER-BIONTECH COVID-19 VACCINE?" have the Covid virus in it what does it contain? Does it have the Flu virus in it where it could make the Flu come back if she had it before. Response: Offered to send the list of ingredients but the caller declined. Referred to the PI section 13. Referred to HCP. The caller asked if she had the Flu before getting the vaccine. She stated if the vaccine does not. The caller asked if the second dose is a "lighter" one than the first. Response: Read from the PI section 13 regarding both doses containing the same dose of the vaccine. Caller reported that she went to the stomach doctor during all this, referring to the diarrhea she had over the winter months. Caller reported that the doctor wants to do a gallbladder scan. Caller reported that she hasn't had the scan done yet but the diarrhea had kind of gone away. Again, occurred on 09Jul2021, Caller reported that she was thinking that it was maybe not her gallbladder because she hadn't had the diarrhea in 6 weeks. Caller stated little did she know that they scheduled that test. Caller reported that she missed the appointment for the test because she didn't know it had been scheduled and they didn't tell her. Caller reported that the stomach doctor was wanting her to have some more stomach tests done. Caller reported that when her doctor took X-rays, they didn't show any stones but her doctor was wanting her to do a Hydascan. Caller reported that her doctor informed her that sometimes it is not gallstones but the gallbladder may not be working right anymore. Caller reported that she may go to the hospital. The outcome of the events diarrhea and cramping its not recovered. and others was unknown    Follow-up attempts are completed. No further information is expected.