loose stools; gut hurting; Headache; This is a spontaneous report from a contactable consumer reported for self. This 76-year-old female patient received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE) on 15Jan2021 10:30 arm right way high at single dose for covid-19 immunisation. Her 2nd dose is schedules for 09Feb2021. She states that the Lot and Expiry were not written, it just says (Name) for healthcare professional or clinical site. This was her first dose for the Covid 19 vaccine she received, it says Pfizer. Medical history included stomach ulcer, Resection of Small Intestines, 18 months ago, it was complete right side resection of the small intestine, it was pre colon cancer and they took out 10 inches, AFib, It was discovered almost exactly a year ago (from 2020), Graves' disease, headaches. Concomitant drug included rivaroxaban (XARELTO) for Atrial fibrillation and a blood pressure medication. The patient previously received Flu shot in Sep2020 at 75 year old for immunization and shingles shot in 2020 for immunization. The last 2 vaccines she got were shingles and Flu shot, and this last year 2020, for the first time in her life she had a little bit of a reaction, it was in particular, the shingles shot, she felt unwell. The reaction she was speaking of with the shingles shot earlier was that she just felt unwell, but not severe. It was for about a day. She has no name and no Lot number for the Flu shot and Shingles shot, what ever the Flu shot was for 2020, she got it in Sep2020. She went to drug store, the shingles shot was the new 2 shot shingles  or something like that, in which it is also 2 doses. She only had trouble the 1st time, it was the little reaction and next time there was no reaction or vice versa, but nothing severe.  She kept thinking, she was a worry wart. She thought that she must have Covid 19. Her daughter laughed at her and said that she did not have covid because she did not have the correct symptoms for covid, but she has to ask it would not help her if she was going to die. Her husband and her had the first dose Friday at like 10:30AM, she Lives an hour away from the site. She had not felt one thing in her arm, no soreness no puffiness, no redness. She was having trouble with her Gut hurting and she was running to the bathroom with loose stools. She did not have a temperature and she does not have any aches and pain. It was diarrhea but not watery, there was some form to it. The gut symptoms started on the same day, possibly in the evening, about 19:00 at night. The Loose stools also started on the 15Jan2021 around the same time. During the night, last night, more so in the middle of the night, her gut really started to feel better, but she has had 2 bowel movements this morning, but it was still very soft. The Loose stools are still on going, but she felt better this morning. She didn't feel "sicky." She felt she was going to live. She has never had a fever. She did have a headache on 15Jan2021, especially when she was worrying. Lab data included investigation: She had physical for the year in Nov2020. Outcome of the event loose stools, headache was resolving. Outcome of the event gut hurting was recovered on 18Jan2021. Information on the Lot/Batch number has been requested.