kidney was aching/ pain over her kidney; sore; felt it and found it like a knot and swollen. She thinks it is her kidney; neck killing her; neck tight; chills; arm was sore; fever of 100; she had a whelp on her side over her kidney; This is a spontaneous report from a contactable consumer (patient). A 55-year-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE), dose 1 via an unspecified route of administration, administered in Arm Left on 20Jul2021 18:00 (Batch/Lot Number: EWD181; Expiration Date: 20Jul2021) as DOSE 1, SINGLE for covid-19 immunisation. Medical history included covid-19 from Jan2021 ( She had Covid but also, doesn't want to get anyone sick because that would be horrific), kidney stones from an unknown date. The patient's concomitant medications were not reported. Patient experienced side effects, sore, chills, neck tight, concerned started having pain over her kidney and welt that raise up over kidney that is hard and it is still there. Patient stated it was hard and swollen, it was achy. If it were pain she would have been more aware, it's like an ache, She had kidney stones, it hurt. Lasted for a couple of days it was not consistent off and on and not occurring now. Everything was fine that day after the shot; the next day went to work and she noticed her arm was sore; around 1500 she got chills, not horribly but they got worse; finally at 1730 when she was leaving work she noticed her neck was killing her and tight. She also had a fever of 100; then she noticed her kidney was aching (on 21Jul2021) and she had a whelp (21Jul2021) on her side over her kidney. It has been a couple of days and she kept rubbing it and her ex-husband came by and she let him look and he felt it and found it like a knot and swollen. She thinks it is her kidney. She had blood panel done when she applied for life insurance in Jun2021 and nothing came up (normal). She looked at the ingredients of the vaccine and nothing concerned her there. Adds she thought medications go through your liver not your kidney. The area over her kidney has been swollen and aching for a couple of days. Fever went away after taking Tylenol early in the morning. Her sore arm; neck tightness; chills; and fever and all symptoms were all better after taking Tylenol. She knows they were better because she thought she can't just lie around and she was able to do all her chores on 22Jul2021. Now her kidney is not aching but she thinks she has a little residual pain. The whelp is not as hard or predominante but still feels a little swollen. She happened to be talking about her kidneys yesterday and she did end up going to the hospital. She wanted to make sure it was her kidneys. She is calling to let us know that nothing came out in the urine and nothing came out in the MRI. Nothing came out in the MRI and she did not want us to get mixed information. She went to the ER because she knew that they would have probability to do the MRI right away and the urine, and blood, if needed. She did not really feel like the kidneys were hurting and wanted to get it done. The outcome of the event kidney pain, Welts was recovering; pain, Swelling was unknown; other events was recovered.  Information about the Lot/batch number has been requested.