she has one sore spot in her belly.; She had awful pain like a bug bite right from her breast line down to the bottom. It continued for days. It has let up. It is sore but tolerable.; Terrible pain in abdomen; Diarrhea; This is a spontaneous report received from contactable reporter(s) (Other HCP). The reporter is the patient. Other Case identifier(s): US-PFIZER INC-2021400099 (Pfizer).  A 78 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 02Apr2021 08:05 (Lot number: ER8734) at the age of 78 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "Blood pressure" (ongoing); "Hypertension" (ongoing), notes: Verbatim: Hypertension; "Chronic obstructive pulmonary disease" (ongoing), notes: Verbatim: COPD; "Thyroid issues" (unspecified if ongoing), notes: Verbatim: Thyroid issues; "Reflux" (unspecified if ongoing), notes: Concomitant Products Pantoprazole (Verbatim): Reflux; "Allergies" (unspecified if ongoing), notes: She does have allergies to some medicines which is why they had her stay an extra half hour. Concomitant medication(s) included: PANTOPRAZOLE taken for gastrointestinal disorder (ongoing); LISINOPRIL taken for blood pressure measurement (ongoing); LEVOTHYROXINE (ongoing); NIFEDICAL taken for blood pressure measurement (ongoing); STIOLTO RESPIMAT taken for chronic obstructive pulmonary disease (ongoing). Vaccination history included: Bnt162b2 (administered in arm left, (Lot number: ER8734) as dose 1), administration date: 12Mar2021, for COVID-19 immunization. The following information was reported: ABDOMINAL PAIN (non-serious) with onset 02Apr2021, outcome "recovering", described as "Terrible pain in abdomen"; DIARRHOEA (non-serious) with onset 02Apr2021, outcome "recovering", described as "Diarrhea"; ABDOMINAL PAIN UPPER (non-serious), outcome "unknown", described as "she has one sore spot in her belly."; PAIN (non-serious) with onset 02Apr2021, outcome "unknown", described as "She had awful pain like a bug bite right from her breast line down to the bottom. It continued for days. It has let up. It is sore but tolerable.".  Additional Information: When she had the first shot she had no reaction whatsoever. When she had the second shot they made her wait half an hour because she had allergies. Everything seemed fine until about 4 hours later. She had awful pain like a bug bite right from her breast line down to the bottom. It continued for days. It has let up. It is sore but tolerable. The diarrhea didn't give her any warning, it just ran all of a sudden. It has gotten much better. She only had it one time yesterday and once this morning. Maybe it was because she was dying for a cup of coffee and she is sick of being on clear liquids. Indication for Covid vaccine: She had been waiting and hoping for it, and she was so happy when she thought she would be able to visit her family. She missed so much last year. She doesn't go anywhere or do anything. She has great grand kids and has only seem them in pictures. One was born in January. Now she has 5 great grandchildren. Everybody is staying away because they don't want to get her sick. She had a heck of a time getting the shot, everybody wanted her to have internet. History: She asks if she should stop taking any of these medications. Her doctor didn't tell her to stop taking any medications. Advised caller to follow advice of physician. Treatment: She was just told to continue drinking fluids, that's all she's been doing. She can't make it anywhere to get checked. Maybe now she can since it is not as bad. She has had no other treatment besides fluids. No vaccine administered at military facility. No additional vaccines administered on same date of the Pfizer suspect. Did any AE(s) require a visit to: no emergency room. No physician office, she hasn't gone anywhere. She just called the doctor. The patient was not hospitalized. No prior vaccinations (within 4 weeks). No AE(s) following prior vaccinations.  No follow-up attempts are possible. No further information is expected.