a possible clot behind her right calf muscle in her right leg; Right eye is now twitching every so often but not constantly; She was afraid that she was going to have a stroke; Even gets headaches; Extreme pressure and pain in her sinus, lymph, right side of her face and her ear; Extreme pressure and pain in her sinus, lymph, right side of her face and her ear; The right side of her face and her head don't feel right; Pain and pressure in her lymph gland on the right side of her throat; Has extreme tiredness and fatigue; Almost felt like she had a possible clot behind her right calf muscle in her right leg. It was a pain near that calf muscle between her knee and the bottom of her heel; She felt slightly dizzy; Slept more; She didn't go back for the 2nd dose because she considers her reaction to be severe; some neurologic side effects; extreme pressure and pain in her right lymph gland, sinus cavities, her eye, her ear, her temple; This is a spontaneous report from a non-contactable consumer (patient herself). A female patient of an unspecified age received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Formulation: Solution for injection, Lot number was: EW0162; Expiry date: unknown) via an unspecified route of administration, administered in Arm Right on 16Apr2021 as 1ST DOSE, SINGLE DOSE for COVID-19 immunization. The patient medical history include anaphylactic shock in 2010 died and was brought back and concomitant medications were not reported. The patient had not taken any other products. She worked in the drug industry for so many years and she did not take medications other than occasionally she would take vitamins or supplements like fish oil or krill oil and maybe vitamin D but nothing on a regular basis and she had not been on any prescription drugs for a very long time. Caller said that she was calling because she got the vaccination on 16APR2021 and she had very severe adverse reactions within 24 hours of getting it. She got her COVID vaccine late Friday afternoon and by Saturday night she had experienced extreme pressure and pain in her right lymph gland, sinus cavities, her eye, her ear, her temple, the right side of her head and her right gland still was not normal. She was trying to avoid going to the doctor because she had a high deductible but she probably would have to go because her right eye was now twitching every so often but not constantly. She really regrated getting the vaccine. She didn't go into a computer system to sign up for her vaccine, someone else did it for her and whatever she agreed to she did not agree to it anymore. She didn't go back for the 2nd dose because she considers her reaction to be severe because she had been extremely healthy for the past few years and not needed to go to the doctor for hardly anything so she was afraid that she was going to have a stroke. Now, over a month and a half later her right gland did not feel right. She even got headaches and the right side of her face and her head did not feel right. She did experience an anaphylactic shock in 2010 died and was brought back, no further details provided. When she got her shot, they kept her for 1/2 an hour because of this. She felt slightly dizzy but for the most part she seemed okay but 24 hours later she literally was curled up and she thought that she was going to die. It was extreme pressure and pain in her sinus, lymph, right side of her face and her ear. Everything began approximately 24 hours after the COVID vaccination except for the eye twitching, that only started about a week ago and it was not constant but she had never experienced anything like that in her life before and it had happened a dozen times in the past two weeks.She was concerned that she might have some neurologic side effects. She said all of her other side effects have subsided somewhat but the real persistent side effect was the pain and pressure in her lymph gland on the right side of her throat. That had been pretty persistent since she got her vaccine, as far as the others, they came and went. She also had extreme tiredness and fatigue. She had slept more since she got the COVID vaccine than normal and she woke up and was awoke for a few hours and then she was tired again and wanted to sleep. The other day she probably slept for 16 out of the 24 hours that day which was quite excessive, it was not normal. This was not constant though. The tiredness was constant. She was sleeping more than she was used to sleeping or that she ever had. In the recent past she did not normally sleep as much. She said that the eye twitching didn't occur today, it occurred yesterday and the day before but she had never experienced anything like that before. Her 2nd dose was supposed to be 07MAY2021 . Another thing that she had that was highly unusual was that she almost felt like she had a possible clot behind her right calf muscle in her right leg. It was a pain near that calf muscle between her knee and the bottom of her heel and it was pretty persistent for few days as well. She didn't bump it on anything. She used a massage cream to massage it out which helped a little bit. It was a little bit strange. The outcome of all events was unknown.   followup attempts are possible, additional information has been requested.