heart rate elevated; muscle pain; blood cell counts abnormal; equilibrium off; Blurred vision; Diarrhea; felt sick all day; sinuses feel off; pressure from headaches; Feeling hot and cold; Chill; fever 101.7 up to 103/ fever 103°F; foggy; Nauseous; tired; Light-headed; pain in arm; couldn't sleep; pain in arm; couldn't sleep; left arm sore and inflammed; swelling; headaches; This is a spontaneous report from contactable consumer (patient) or other non HCP. A 50-year-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection, batch number/Lot number: EW0162, Expiration date: unknown), via unspecified route of administration in arm left on 09Apr2021, at 1ST DOSE, SINGLE for COVID-19 immunization.  Patient medical history included ongoing prediabetic , Chronic sinusitis on unspecified date in 2014 and patient had undergone sinus surgery on unspecified date in 2014, COVID-19, acid reflux, patient had family history of father had a heart attack and mother had a heart attack and they are both diabetic. Concomitant medication included pantoprazole (PANTOPRAZOLE) on unspecified date at 2021 to ongoing for acid reflex which was diagnosed years ago, but has been actively taking for 3 months until now, multivitamin on unspecified date. Patient did not received any other vaccines Prior to that Vaccinations within 4 weeks. Patient had no know illness at the time of vaccination. 09Apr2021 patient experienced headaches, Light-headed, pain in arm; couldn't sleep, left arm sore and inflammed; swelling, on 10Apr2021 patient experienced chills, fever 101.7 up to 103/ fever 103°F, foggy, Nauseous, tired, Diarrhea, felt sick all day, sinuses feel off; pressure from headaches, Feeling hot and cold. on 12Apr2021 patient experienced equilibrium off, Blurred vision. on an unspecified date patient experienced heart rate elevated, muscle pain, blood cell counts abnormal. Patient reported that she had her Pfizer BioNTech vaccine on Friday 09Apr2021 and has had some serious side effects. patient wants to understand why she had such bad side effects compared to other people. Husband and other people she knows didn't have any side effects and she did. She states her next shot on 30Apr2021 and when she got the Pfizer COVID-19 vaccine, she felt fine as stayed the wait time at the facility but got lightheaded when she got to her car. She reported that on 09Apr2021 she had the lightheadedness comes and goes and she also experienced a headache and her arm soreness inflammed; swelling on 09Apr2021 in Friday. She reported that her arm pain was so bad that she couldn't not sleep. She could not lay on it. she states it is a little better now, it still hurts, but she is able to roll off of it and get some sleep. Patient experienced chills and a fever from 101.7 up to 103 degrees and Feeling hot and cold on Saturday 10Apr2021. she stated that she was taking Ibuprofen for pain and fever, and was told she shouldn't take Ibuprofen, she should take Tylenol to break the fever and she took some Tylenol and her fever broke after taking Tylenol. Patient stated that on 10Apr2021 she had also felt foggy, nauseous and tired. She reported that she had COVID in Jun2020 and felt like COVID all over again. she had the same symptoms; really tired, could sleep for days. patient thinks she had a bit of an allergic reaction on her arm. It has improved, but now she has a red swollen splotch on her arm, and it is not even where they put the needle it is down a little bit lower. Patient reported that her heart rate was elevated as well. Patient reported that 12Apr2021 she felt like equilibrium is off, and had blurred vision, feels fine right now, but all she has done was slept since she got home from work yesterday and hasn't exerted herself today yet and right now she is not tired, she slept for 12 hours. Patient reported that she felt sick all-day and had diarrhea on 10 Apr2021 in Saturday, nausea started on Saturday, all she could eat was chicken noodle soup and she experienced it yesterday. she states yesterday she took some Tylenol, and got a chicken sandwich, since she had taken some medication, and then wanted to throw it up when she got home and she is not foggy now, but it comes and goes, the symptoms are intermittent, she doesn't know if she will be ok. she can still feel on 10 Apr2021 her had sinuses feel off and she had chronic sinusitis and whenever she gets sick her sinuses get attacked. she states she didn't think she would get side effects because she already had COVID, but apparently it is the opposite. Patient reported that she was being told so many different things and now she was scared to get the second shot and is freaking out. she reported that she had to cancel all the appointments at work yesterday day because of the events and she thought she would have the weekend to recover from any side effects but couldn't do her job yesterday. Patient was not their in-Emergency Room nor visited physician office. It was reported that blood cell counts abnormal, so her doctor has her going to see a hematology doctor on Thursday. It could be nothing but sending there to check. The patient underwent lab test and procedure which include blood cell counts abnormal on 10 Apr2021 Outcome of events headache, chills, fever, foggy, nausea, tired, equilibrium off, Blurred vision, felt sick all day, sinuses feel off; pressure from headaches, heart rate elevated, muscle pain were unknown, light-headed, Diarrhea, Feeling hot and cold were not resolved, pain in arm; couldn't sleep, left arm sore and inflammed; swelling, were resolving,   Follow up (13Apr2021): This is a follow-up spontaneous report from contactable consumer. A 50-year-old female patient reported new information received which included event detail, relevant medical history, concomitant medication.   No Follow-up attempts are needed. No further information is expected