slept all day, very tired; mouth and throat was dry; mouth and throat was dry; problems with stomach, like hurting; stomach felt warm; could taste shot; Felt terrible; This is a spontaneous report from a contactable consumer (patient). An 81-year-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE), via an unspecified route of administration, in right arm on 06Mar2021 at 09:15 (Batch/Lot Number: EN6200) at the age of 81-year-old as second dose single for COVID-19 immunisation. Medical history included ongoing restless legs syndrome, sinus and nose run. She takes a blood pressure medicine and she has restless leg syndrome that she takes a medicine for. She had a regular check up in Dec2020. Historical vaccine includes BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Lot EL9269), via an unspecified route of administration, on 13Feb2021 at the age of 81-year-old, as first dose single, for COVID-19 immunization and the patient experienced no adverse events. On 06Mar2021 at 17:30 the patient experienced problems with stomach, like hurting, stomach felt warm, could taste shot and on 07Mar2021 experienced slept all day, very tired, mouth and throat was dry. The patient reported when they gave her the shot she tasted it and then about 17:30 on 06Mar2021 she started having problems with her stomach. Her stomach started hurting. Then it felt like when you put your hand on your stomach like putting your hand on your head for a fever that it felt warm. She felt terrible. On 07Mar2021 she slept all day and she didn't feel like going to work on 08Mar2021 and she's not one that misses work. She only weighs less than 85 pounds, she did not know if her weight had something to do with that. Her husband took the COVID-19 vaccine and he didn't have any side effects. She told her doctor that she wasn't going to get the COVID-19 vaccine until he did. And he got it. It's not like her to sleep all day. She reported her mouth was dry as it could be, like she had cotton in her mouth. She's never sick, she doesn't miss days at work. Is there anything she can take? Her daughter had said people do get sick and it lasts about 24 hours and then they feel better. She took aspirin clarified as Dollar General Pain Relief 500mg, she took 3 at one time. She takes Dollar General Pain Relief when she has a bad headache. She doesn't usually have headaches. She reports the Dollar General Pain Relief did help. Expired 2019 she didn't even see that, that's how much she doesn't use them.  She sees AO561 on bottle. She usually does and goes and goes, she's usually doing something. She woke up on 07Mar2021 and her mouth was dry, she has sinus, but her nose usually runs. Clarified nose did has not run since getting the COVID-19 vaccine. Her stomach was better on 08Mar2021 but her throat was still dry. At least her stomach was not hurting. She felt better last night (07Mar2021). She's feeling better and decided take one more day off to not overdo it. She reported that her stomach felt real warm like her stomach had a fever but she did not have a fever and her stomach is fine now. The events did not require emergency room visit or physician office visit. Outcome of mouth and throat was dry was not recovered, outcome of problems with stomach, like hurting and stomach felt warm was recovered in Mar2021, felt terrible was recovering, while outcome of other events was unknown.  No follow-up attempts are possible. No further information is expected.