Had blood and later found out protein- in my urine and pain where right side kidney is along with typical side effects of vaccine. I detailed side effects of 3rd dose in case relevant to adverse event.  Side effects experienced and expected below: Shivering, fever of 102.2 (my normal with that thermometer was 97.7 when not sick), could not get warm, body aches and joint pain, spo2 was 97 with prbpms at 114 at 09/30/2021 ~22:00. Nauseous when standing at some times.  Adverse Event: Back right side began to become very sore and uncomfortable. Urine began to become pink, then red, and proceeded to become a dark muddy color. Drinking lots of water would reduce it back to red or light pink but the back right side soreness/discomfort continued and if walking or bending a lot would become painful. During the time period from 10/1/2021 to 10/4/2021 I did take a dose of one ibuprofen liquid gel pill per recommended time on bottle for fever, body aches, and pain on back right side but it did not help much. Noted that bottle states 1-2 pills for adults. Since it did not seem to help I stopped taking them 10/3/2021 evening.  Blood in urine continued till 10/3/2021 in evening. During time frame tried to drink a lot of water and occasional sugar-free Gatorade. Discomfort on back right side (occasionally pain) was still bad enough that I took 10/4/2021 off work to rest.  Discomfort continued when working 10/5/2021 and 10/6/2021. Tried to go to Urgent Care night of 10/6/2021 but they were too busy after work. Went back on 10/7/2021 in morning.  Note: I had blood in urine from 2nd dose of Pfizer as well but at time I thought the urine color was due to excessive mucus drainage and did not realize it could have been blood. Only after 3rd dose where I had pain in back right and went to urgent care did I learn that it was blood & protein. In hindsight I had darker urine also in January of 2020 when I got very sick and suspect it could have been Covid-19.  Discomfort and occasional pain in back right side persists to current date. Kidney biopsy is scheduled for 10/25/2021 07:30 at  Medical Center,   Urgent Care & Eastern Nephrology Visits At urgent care they took a blood sample and urine sample. Creatinine levels were found to be high (unsure exact levels at that time) and blood & protein were found in urine. CT was done by recommendation of Dr.  to rule out kidney stones. CT results did not indicate kidney stones. Blood was drawn again and an IV of I believe saline was given to hydrate me and flush my kidneys out. Dr.  began to suspect issue was something called ?IgA Nephropathy? which, I understand from his explanation, can be an underlying problem that can be set off by the vaccine? They referred me to  Nephrology to speak with Dr.  regarding issue. Follwed up at  Urgent Care on 10/12/2021 09:00 where blood was drawn again. Creatinine levels at this time were 1.4. Was advised by Dr. , who I saw when following-up at Urgent Care, to begin taking Fish Oil Supplements for kidneys.  Went to  Nephrology 10/12/2021 14:00 and provided urine sample. Protein of sample was still found to be higher than it should be. After speaking with Dr.  he to suspected that it could be an existing, unknown to me, kidney issue called ?IgA Nephropathy? that was irritated by the vaccine. He has scheduled a kidney biopsy for me at Medical Center 10/25/2021 07:30 as he explained that?s the best way to know what?s going on and he is concerned due to protein being found in urine so long after vaccination.