her right foot is swollen/her right foot near the toes was swollen/it was swollen near the toes. It was beneath the foot, under the toes only the toe area.; it has developed into cramp or splint/It developed to a cramp and spleen; Her foot was red in color at the beginning; It developed to a cramp and spleen; her right foot near the toes was swollen and painful under the toes/It was painful when she woke up/it still hurts a little bit.; uncomfortable when she is walking on her right foot; This is a spontaneous report from a contactable consumer or other non hcp. A 64-year-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Formulation: Solution for injection, Batch/Lot Number: EW0202, NDC number: Unknown, Expiration Date: Sep2021), via an unspecified route of administration, administered in Right arm near the shoulder on 11Jun2021 11:00 at the age of 64-years-old as dose 1, single dose for covid-19 immunisation. Patient's Medical history including any illness at time of vaccination included breast cancer from 2015 to 2020, taking Tamoxifen to prevent breast cancer, ongoing stress from unspecified date, ongoing Decreased bone density from unspecified date 6 years ago. Taking medications for 6 years. She mentioned that she had a Mammogram on 14May2021. No further information provided. Investigation Assessment was No. Patient age at time of vaccination in months or years was 64 years. Concomitant medications included tamoxifen (TAMOXIFEN) for preventing breast cancer for over 5 years because she had breast cancer 5 years ago from an unspecified start date and ongoing; aripiprazole (ARIPIPRAZOLE) taken for Stress for about 20 years from an unspecified start date and ongoing; clonazepam (CLONAZEPAM) taken for Sleeping aid for 20 years from an unspecified start date and ongoing; vitamin d3 (VITAMIN D3) taken for bone density for 6 years from an unspecified start date and ongoing. Tamoxifen decreased bone density. No further information provided. So, she needs to have the calcium and the D3. calcium (CALCIUM) taken for Bone density for 6 years from an unspecified start date and ongoing. Vaccination Facility Type was Pharmacy/Drug Store. History of all previous immunization with the Pfizer vaccine considered as suspect (or patient age at first and subsequent immunizations if dates of birth or immunizations are not available) were None. Additional vaccines administered on same date of the pfizer suspect were none. Prior vaccinations within 4 weeks were none. AE(s) following prior vaccinations were none. Family medical history relevant to AE(s) was none. Relevant tests were none. The patient took Pfizer Covid-19 vaccine as advised by oncologist and family doctor. The patient received the 1st dose of the Pfizer-BionTech COVID19 Vaccine on 11 Jun. She said today her right foot is swollen and it has developed into cramp or splint on 21Jun2021. She provided, It developed to a cramp and spleen. She spells spleen phonetically, captured as provided by her. It felt better when she massaged and stretched it but it still hurts a little bit. She said that she did not develop fever and can eat well. She said that she will call her family doctor. She wanted to know if the side effect is because of the vaccine. She stated that she had some symptoms after the Covid-19 vaccine. It was 10 days ago. She stated that this morning on 21Jun2021, when she woke up, her right foot near the toes was swollen and painful under the toes. It developed to a cramp and spleen. It lasted for 1 hour. It was painful when she woke up. She said that one hour later, she was doing housework and it was getting better. It was still painful and slightly cramping. This morning when she woke up, it was swollen near the toes. It was beneath the foot, under the toes only the toe area. She had the vaccine on 11Jun2021. She states it is a little improved, but it's still uncomfortable. She had no other symptoms. She did not have a fever. She had a good appetite. Her foot was red in color at the beginning on 21Jun2021. She said the redness was gone. She massaged it. It was slightly swollen. Now it is slightly swollen. She said that it was uncomfortable when she was walking on her right foot on 21Jun2021. Now it is no more red in color but slightly swollen. She stated that her next dose was scheduled on 02Jul2021 at the same place as her oncologist and her family doctor told her for COVID 19, they told her to do it. Treatment for Event included She did massage and stretching. She did it on her own at home. She said when it was swollen, she did massage herself. It was slightly improved after the massage and stretching. The adverse events did not require a visit to Emergency Room or Physician Office. Reporters seriousness for events was unspecified. The outcome of event, Her foot was red in color at the beginning was resolved while other events were resolving.  Follow up needed, further information has been requested.