my head and ears closed down; my head and ears closed down; she doesn't sleep all night long; her body was shaking; my heart was beating out of my chest; felt a little lazy and tired; tinge-y pains in her heart; SVT; shortness of breath; This is a spontaneous report from a contactable consumer (patient).  An 81-years-old female patient received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Batch/lot number: EL9261, Expiry date: 31May2021), via an unspecified route of administration on 19Jan2021 at Single Dose (dose unknown; by injection once to left upper arm) for covid-19 immunisation, levothyroxine sodium (SYNTHROID), orally from an unspecified date to an unspecified date at 0.75 mg once a day, and orally from an unspecified date to an unspecified date at 0.88 mg, once a day for thyroid disorder.  Medical history included cancer, heart stents, irregular high blood pressure, breathing problem, underactive thyroid, back problem. The patient's concomitant medications were not reported. The patient took a flu shot 20 years ago for immunization and got really sick, took Pneumonia shots for immunization and was fine.  On 19Jan2021, the patient had a little lazy and tired. On 21Jan2021, her heart was beating out of her chest, like she had a drum going off; beating so fast and rapid it, and her head felt closed off and ears- she could feel heartbeats in her head; on 21Jan2021, her body was shaking. In Jan2021, she had a couple tinge-y pains in her heart and shortness of breath; she had SVG, she thought, it was irregular heartbeats coming from the top of her heart. Details were as follows: On 22Jan2021, she woke up in the morning around 3-4 am and said "my heart was beating out of my chest and my head and ears closed down." The sensation subsided by 8 am. She called her family MD who did not respond so the following Monday she was in contact with her cardiologist who put her on a Holter monitor for a few days. He later told her she had SVT and prescribed a beta blocker for her to take. The patient stated "I am so allergic to medicine." She took Plavix after a stent 5 years ago and was fine taking it for a few years. Then she had another stent placed, was prescribed Plavix again, and was "so sick and dizzy and short of breath - it was the Plavix." States that she can take Cipro, ibuprofen, and synthroid and that her list of allergies is about "2 pages long."  The patient wanted to know if she should take the second dose? her cardiologist advised that she not take it. Caller states she doesn't want to take the second dose and probably won't. She had a long history of allergic reactions to medications. She never had the flu, she hasn't had mumps, chicken pox, measles, occasionally, rarely a cold, about 20 years ago, she took a flu vaccine and got so sick after the shot and never took it again, she never got the flu, she does take Pneumonia shots and was fine. States she seems to have a natural immunity against typical disease you can catch. Other things, she had cancer, heart stents, and things of that sort, as far as infectious diseases, she had no problems. She had a reaction she thinks came from the COVID shot. She had a blood test and it showed her thyroid went a bit more underactive, so about 2 weeks ago, her Synthroid was raised from 0.75mg to 0.88mg, so 0.88mg was a new medication, but it was minimal. Communication: Caller was advised to slow down to assure accurate documentation. Synthroid 0.75mg: no NDC, lot, expiry. States this has been her only change in meds recently. She got that Synthroid the same day as she got her COVID vaccination, which was 19Jan2021, that afternoon, she got a Pfizer COVID vaccination. Also she got a prescription for her new Synthroid. The first day, 19Jan2012, she had no reaction at all, she took two Tylenol, someone suggested. She felt a little lazy and tired, for the rest of Tuesday, then Wednesday she felt more tired, she laid around on the couch watching TV, she stayed in her pajamas, had no serious reaction, just tired, then Tuesday and Wednesday, and then on Thursday night, she never did anything on Thursday either, she went to grocery store, was not feeling better, and on Thursday, 21Jan2021, at 3AM, she was awakened from sleeping, she did not sleep all night long, she got up often, her heart, she never had this before and had 3 stents, her heart was beating out of her chest, like she had a drum going off, it was beating so fast and rapid and her head felt closed off and ears- she could feel heartbeats in her head, and this went on, she didn't want to call, she lives by herself on a farm, and thought to wait and see if it goes away, and about 7AM, it was basically really bad from 3AM to 5AM, and at 7AM it went away, the rapid heartbeat was so far throughout and her body was shaking, and chest was so she never had it happen before.  At 8AM she called her family doctor office, she wanted to go and see them and she was told she wasn't in that day, they would send a note in the computer to get back with her. The doctor did not get back with her all day Friday, and then she felt ok Friday, Saturday, and Sunday, she had a couple tinge-y pains in her heart and shortness of breath, but her heart didn't feel like it was beating out of rhythm. Then Monday morning she called her heart doctor, he said he doesn't know, it doesn't sound to him like it was the Synthroid, since it was a small change of dose, but he didn't know about COVID but he hadn't heard it as being an after effect, but he said to come by 2:30PM on Monday, to be fitted with a heart monitor, which she wears on her heart and it listens 24/7, listens to her heart function, so she wore that, he said to bring it back on Monday and leave it in the office, and she did that, she wore it Friday, Saturday, Sunday, and Monday, she never had that really huge feeling in her in heart anymore, she thought it was a waste of time, then she got a call from the heart doctor on Tuesday, he asked how she was feeling, she said she was fine, and sorry if she caused a commotion and he said she has a heart problem now, she said she didn't feel anything, but her heart is beating erratically, and he doesn't know why she didn't feel it, he said she has SVG, she thinks, it is irregular heartbeats coming from the top of her heart and he says he will send in a prescription to the pharmacy to get a beta blocker, she thinks Metoprolol. The pharmacy just got the medicine in and she is sitting there waiting now. He told her a couple months ago, her heart sounds fine, there seemed to be nothing the matter. She asked if it was the COVID vaccine, he said he doesn't know, and she asked if she should take the second dose on 09Feb2021, he said no, he doesn't think he wants her to take it, she is going to see him in 2 weeks and will try the medicine, but she wanted to report what happened to her. Has Pfizer heard of anyone having rapid heartbeat after COVID vaccination. States she is overweight. Second dose is scheduled for 09Feb2021, at 1PM. Caller states going from 0.75mg to 0.88mg on Synthroid is a minimal adjustment, it can go up to the 200's for underactive thyroid, it's minimum, she is supposed to take it on an empty stomach, first thing in the morning with water. She has had underactive thyroid since she was 20 years old, so for 40 years, and had no problems with Synthroid before. The patient had irregular high blood pressure: it is high during the night and normal during the day, and if she would take, she had been going to physical therapy, she had a back problem, it came from a different thing, her knee is bone on bone, and they want her to get a knee implant, but when she limps on her knee it makes her back, it hurts from not walking straight, so she went to physical therapy, and what was causing high blood pressure, if she took Ibuprofen or Aleve, it would significantly increase her blood pressure, so she has a sensitivity to pain medicine, especially Ibuprofen and Advil, it increases her blood pressure, and often when she doesn't have it in her system, her blood pressure is much more normal. She does not have Ibuprofen, Aleve, Advil to provide lot/expiry, she is in her car. She is interested, she feels she won't take the second vaccine, she wants to see what they say, she also wants to ask how much protection with just the first shot?  The action taken in response to the event for levothyroxine sodium was unknown. The outcome of the events heart was 'beating out of chest', 'head and ears closed down' was recovered in Jan2021, of other events was unknown.