not feeling well; threw up; her legs felt heavy like she had just finished exercising.; lower back pain; nausea; headache; experiencing pressure behind her eyes; She felt absolutely exhausted; Eyes feel heavy; felt like she had been hit by a truck/Just don't feel myself; arm started hurting/ arm pain/pain in top of legs; This is a spontaneous report from a contactable consumer (patient). A 55-year-old female patient received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE), via an unspecified route of administration on 28Mar2021 at 09:45 on the right arm as single dose for COVID-19 immunization. Medical history included diabetes mellitus from 2014 and ongoing; ongoing unspecified blood pressure condition that diagnosed with blood pressure problems in the early 2000's; ongoing unspecified cholesterol condition that diagnosed with cholesterol problems in the early 2000's; ongoing chronic fatigue. No family medical history relevant to events. Concomitant medications included lisinopril from 2014 and ongoing for blood pressure measurement; atorvastatin from 2014 and ongoing for blood cholesterol. Patient did not have previous immunization with the Pfizer vaccine considered as suspect, no additional administered vaccines. No prior vaccinations within 4 weeks and no events following prior vaccinations. Patient was scheduled on 18Apr2021 for the second dose of the Covid-19 vaccine. Patient arm started hurting on Monday 29Mar2021 or Tuesday 30Mar2021. Patient reported that her arm didn't hurt for very long, just if she rubbed up against something like the shower nozzle. The arm pain went away completely. On 28Mar2021 around 15:00, patient felt like she had been hit by a truck and that she needed to lay down. Patient got up a few hours later and felt fine; also felt better a few hours later after laying down. On 02Apr2021, patient developed a massive headache on the back right side of her head. She later reported that the headache was now in the left side of her head. The whole time since 02Apr2021, she had been experiencing pressure behind her eyes and she can't focus because her headache was so bad. The headache went down into her neck. The headache had been coming and going, sometimes in back of her head and went down into her neck. On 14Apr2021 that the headache was on the left side of her head, when she went to the doctor on 05Apr2021, headache was just on the left side going down into her neck, but now it was on the left side going up the top of her head to down by the corner of her left eye. Patient reported that she didn't get headaches and that she didn't live off of Tylenol every 6 hours. Patient had a headache that won't go away and taking Tylenol around the clock every 6 hours and Benadryl every 12 hours. Patient was starting to get concerned why her head hurts so bad when she doesn't normally get headaches. Patient reported that beginning 02Apr2021, she felt absolutely exhausted. She already had chronic fatigue, but this was much worse. Patient sit on the couch and her eyes felt so heavy that she can hear her husband talking but can't look at him. The exhaustion comes and goes. There can be day where she gets up and feels ok, then a couple hours later it starts. Patient stayed in bed 02Apr2021 through 04Apr2021. Patient was not a person that lays in bed all day, but that after 02Apr2021, that was all she had been doing. Patient reported that she had an existing appointment with her physician on 05Apr2021 and added the side effects she had been experiencing since 02Apr2021 to the appointment. Her physician ordered a bunch of labs, inflammation markers and everything, and that all of the bloodwork came back normal. The patient was not feeling well since everything came back kosher at the doctor and got an ok from the physician. Patient inquired why it took 7 days for the side effects to hit, for her to get a headache that won't go away. Patient had nausea comes and goes on 02Apr2021, she also was experiencing nausea on 14Apr2021 and that she threw up on 13Apr2021. Patient took ginger for the nausea. Patient originally reported that the lower back pain felt like someone had kicked her in the kidneys on 12Apr2021. On 14Apr2021, the back pain didn't feel like someone kicked her in the kidneys anymore but it's still there. The lower back pain was not going anywhere but it was not putting her down in the ground. Patient had pain in top of legs on 13Apr2021, she laid down and got up to make something to eat. Patient was in the kitchen with her husband and she reported to her husband that she felt like she couldn't stand, and she needed to go sit back down. Her legs felt heavy like she had just finished exercising and a little while later the pain in her legs was gone. Patient just didn't feel herself on unspecified date. Lab data included the normal result of the CBC with auto differential on 05Apr2021 included white blood count, hemoglobin, hematocrit, MCV, MCH, MCHC, platelet count. Her physician informed that her white count was normal and did not include any signs of infection. Her doctor informed that the sedimentation rate was an inflammation marker and that it was normal. No events required a visit to emergency room, and had a physician office visit for events headache, nausea, exhaustion. The outcome of the events headache, lower back pain, nausea was not recovered, while of the other events was unknown.  No follow-up attempts are possible; information about lot/batch number cannot be obtained.