muscle pain under my breast; States that she did not know if it was chest pain. States that the pain under her breast now feels like it is going up past her breast. States that it feels really tight.; States that she did not know if it was chest pain. States that the pain under her breast now feels like it is going up past her breast. States that it feels really tight.; Fever; muscle pain in between her buttocks; hands are cold; pain in her left arm; felt my body was warm; temp was high; This is a spontaneous report from a contactable consumer.  A 52-year-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE; Solution for injection; Lot number: ER8730, Expiry Date: unknown), via an unspecified route of administration on arm left on 24MAR2021 13:00 (Age at vaccination: 52 years) as dose 1, single for COVID-19 immunisation. The patient medical history included high bllod pressure, cholesterol, diabetes. History of all previously immunizations and Additional vaccines administered on same date was reported as no. Prior vaccinations within 4 weeks and adverse events following prior vaccinations was reported as no. The patient Concomitant medications included Losartan for blood pressure from an unknown date, Metformin Hcl (METFORMIN) taken for diabetes from an unknown date, Pravastatin Sodium taken for Cholesterol from an unknown date (States that she has no real cholesterol issues but doctor put her on low dose because of her diabetes and family history has heart problems and doctor wants to reduce her cholesterol for safety). On 30Mar2021, the patient experienced body temperature high. It was reported that she had pain in her left arm, but also on Tuesday 30Mar2021, I felt my body was warm, my temp was high, had a little fever for a couple of days. On Wednesday night, in middle of night, I had muscle pain under my breast, I took ibuprofen to go to sleep, but the pain has been on going. Are these side effects normal and will they go away. It was reported that patient was scheduled for next dose next week Wednesday 14Apr2021. The patient reported that after the first dose she was okay and her arm was sore for a day or two. States that there are no issues with her arm. States that on 30Mar2021, in the afternoon, she suddenly started feeling that her body temperature was high. States that she had a fever for a couple of days. Remembers that Wednesday night she suddenly woke up feeling body pain. she started having a fever, Wednesday night she began having muscle pain in between her buttocks. Her temperature orally, bilateral axillary and temporal. The reporter reports getting different temperatures, the highest being 103F. She would like to know if she should go to the doctor/ emergency room and why her temperatures are reading differently. States that the pain was under her breast but not in the stomach. Tried changing sleeping positions and took Ibuprofen and was able to go back to sleep.The next day was the same thing.  States that she took a pain killer. States that she only takes a pain killer if she is not able to tolerate the pain. States that when she goes to sleep, she doesn't take it right away but when she has pain, she takes it so she can sleep.States that this occurred over the weekend during the day it didn't really bother her. Yesterday, it started to bother her again and this morning when she woke up. States that she has to take ibuprofen and is asking if she should see her doctor.States that on 03Apr2021, she started to feel that her body temperature was high, like a fever. States that she does not have COVID, that she tested negative on Thursday and again on Saturday. States that she checked her body temperature in the morning by mouth and it was 98.  States that she went to the office and checked again and it was 100.2 by mouth and 99.2 under her arm. States that she knows it is higher in the mouth than the arm. States that her hands are cold. States that yesterday she talked to a friend who works in the hospital who told her to measure her temperature by mouth. States that her temperature by mouth was 98.8. States that this was last night around 7pm. States that her temperature is normally not more than 98. States that her temperature was suddenly changing to higher than what it used to be. States that the pain is driving her crazy and does not know if it is chest pain. The event (Body temperature high) was First noticed on Tuesday afternoon. States that she wondered why her temperature was high.  States that she did not really feel dizzy but did not feel quite right. States that all of a sudden, she wondered why she felt warm, when she normally feels cold. She did not know if it was chest pain. States that the pain under her breast now feels like it is going up past her breast. States that it feels really tight. States that she feels it more in the middle but that it is more sore on the left side. States that the pain is in the front, not the back. Does not know if it is the right or the left. It was reported that in addition to her previous report, she is experiencing fever, realized something rare about this fever, states her temperature is hot on her mouth and under her arm but on her head, head temperature is normal or low. States in her mouth it was 106 degrees, underarm it was 102 degrees, and her head is 96 degrees. She also has a side effect of muscle pain for the first dose. She wants to make sure that the temperature issue is a side effect because she doesn't feel dizzy. The lab test included Body temperature: 98, 100.2, her mouth it was 106 degrees, underarm it was 102 degrees, her head is 96 degrees, 103 Fahrenheit on an unknown date. Body temperature: high on 30Mar2021. Therapeutic measures were taken as a result of muscle pain under my breast and Has been taking Ibuprofen. States that she also takes an other medication that she got from work, as a pain killer. States that she does not know the name of the medicine but does not think that it is working. States that it works and gives her pain relief, but doesn't last long. States that the Ibuprofen is working, but not the pain killer. The outcome of events was unknown.  Follow-up (13Apr2021): This is follow up contain no new medically significant information.   No follow up attempts are possible. No further information is expected.