Had headaches and felt nauseated; Had headaches and felt nauseated; Had a blood clot in her lungs; she had tripped and fallen; This is a spontaneous report from a contactable consumer (patient). A 68-year-old female patient received the second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 MRNA VACCINE; solution for injection; Lot Number: EN6206) via an unspecified route of administration on 16Apr2021 at 10:00 ("around 10:00 or so"; at the age of 68-years-old) as a single dose in the left arm for COVID-19 immunisation (the patient was "fearful of the new variants and wanted to be extra protected against those variants.") Medical history included COVID in Dec2020 and uses oxygen (normally used oxygen, but not all the time), from an unspecified date and unspecified if ongoing. Medical history was also reported as none. Relevant family history related to the adverse event was reported as none. Concomitant medications (other products) were reported as none. The patient did not receive prior vaccinations, within 4 weeks prior, or on the same date as the COVID-19 vaccine. The patient previously received iodine contrast dye on an unspecified date for an unspecified indication and experienced anaphylactic shock. The patient received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 MRNA VACCINE; solution for injection; Lot Number: EN6207) via an unspecified route of administration on (at the age of 68-years-old) as a single dose in the left arm for COVID-19 immunisation and experienced did not feel well, felt achy and nauseated (captured in AER: 2021495492). On 27Apr2021 the patient experienced had a blood clot in her lungs and she had tripped and fallen and on unspecified dates the patient experienced had headaches and felt nauseated. The course of events was reported as follows: "After the second dose of the vaccine the patient felt fine, she felt pretty much okay. She attributed that to her having had COVID back in Dec2020 based on her biological knowledge. She ran this idea past a pharmacist that said that generally people might take the first dose of the COVID vaccine and be fine and then be worse on the second dose. But since she had COVID in Dec2020 her second dose of the COVID vaccine was the problem like how people's antibodies were already built up and had that reaction so that is why she was fine. She was walking out of the hospital on 27Apr2021, there were people that had crossed in front of them very quickly and her foot had hit the foot of a lady that was pushing a gurney. The patient tripped and fell down and she was taken to the emergency room. In the emergency room, a doctor did some tests and shockingly the doctor said that the patient had a blood clot in her lungs. A physician's assistant told the patient that she needed to have a computerized tomography (CT) scan done. The patient needed to go home to take care of responsibilities there, so she walked out of the hospital. She did not know if she had a blood clot in her lungs or not. Her doctor said that the blood clot in her lungs was based off of two blood values. One was the d-dimer that had a reference value of < 500 and her level was 1,079 and the other blood work was troponin-I but it looked like it should be in the normal range because her level was less than 0.03 and the reference range was 0-0.04, so she would think that she would fall into the normal range. The d-dimer one was kind of scary. She had other tests done. They did a regular complete blood count (CBC) on her, another kind of test and another set of blood values but from looking at the results she was only a little low on a couple of things. They did not do the test with the contrast, but they did take an x-ray of her lung. The technician had found out that she had not had a Computed axial tomography (CAT) scan in a while, since she apparently needed them periodically, and she felt uneasy because that technician was urging her to get a CAT scan. The patient she did not know if these results were relevant or from the COVID vaccine. She did not understand this but when she was looking at the lab notice there was a note that the patient should be monitored for B Type Natriuretic Peptide (b/np) levels. It had the reference range on that one but when she read it, it looked like hers lied within the normal range. After the second dose she just had a headache but did not feel sick, but a week later they were telling her that she had a possible blood clot in her lungs. The patient was concerned at this point because she had no reason as to why she would have a possible blood clot. When she gets exhausted her oxygen drops and sometimes it will without her being exhausted. She was scared to go back to that one hospital. She was thinking about going to another hospital that was 60 miles away. If they would need to keep her overnight, she would need to make arrangements for her animals. She has had headaches, but they may be due to stress. She did not feel sick, other than she had been nauseated. The patient stated that she was not saying that what was reported on report 1 of 2 was due to the Pfizer COVID vaccine but why would they say that she had a blood clot too." The clinical outcomes of the events had a blood clot in her lungs, she had tripped and fallen, had headaches, and felt nauseated were all unknown.