Intestinal problems; affected her bowel movements which was unusual for her; wakes up a lot; feels uncomfortable and gets to the bathroom and has trouble then has a bowel movement; she felt ill; Sleepy; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 88 year-old female patient received bnt162b2 (BNT162B2), administration date 05Mar2021 (Lot number: EN6206) at the age of 88 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "AFib" (ongoing), notes: tries to control with breathing exercises; "High Blood Pressure" (ongoing); "pregnant" (unspecified if ongoing), notes: When she was pregnant she had a restricted diet and had her child safely. She has had five children. Concomitant medication(s) included: ESTROGEN (ongoing). The following information was reported: SOMNOLENCE (non-serious) with onset Mar2021, outcome "recovered" (Mar2021), described as "Sleepy"; GASTROINTESTINAL DISORDER (non-serious) with onset 20Mar2021, outcome "not recovered", described as "Intestinal problems"; BOWEL MOVEMENT IRREGULARITY (non-serious) with onset Mar2021, outcome "unknown", described as "affected her bowel movements which was unusual for her"; MIDDLE INSOMNIA (non-serious) with onset Mar2021, outcome "unknown", described as "wakes up a lot"; ABDOMINAL DISCOMFORT (non-serious) with onset Mar2021, outcome "unknown", described as "feels uncomfortable and gets to the bathroom and has trouble then has a bowel movement"; MALAISE (non-serious) with onset Mar2021, outcome "unknown", described as "she felt ill". Additional information: The patient tries to control her afib with breathing exercises; she also purchased a machine to help her breathe a certain way, she could not stand doing that, so she wasted her money with the machine. The patient found out many years ago when she was pregnant with her first child. When she was pregnant, she had a restricted diet and had her child safely. She has had five children. The patient doesn't know when high blood pressure medical history started; it was reported that it only happened this year that it went up to 250 during an operation. It was reported that she normally checks her blood pressure and it was in a good range. She doesn't think that she was stressed and did not feel it. She does not like to take pharmaceuticals for high blood pressure; stating that they want you to be like a zombie. She tried one and could not get around or anything. She says it was not under control and she has various episodes. Patient's concomitant medication also included ongoing thirteen vitamins and has been taking it for years. The patient has been taking estrogen since she stopped menstruating; taking for at least 20 years. Clinical course of events: The patient had a good experience the first week after the shot but was very sleepy at night, added to her sleep so that was ok; then it went away and she felt good for about 4 days. The last week it returned, she doesn't know what that was about. It was hard to get up and she wanted to go back to sleep. It went away around 21Mar2021, she did not have an exact date. The second week she started to have some strange things. She was sleepy again towards the end of the second week. The worst part is this week, on 20Mar2021, she had intestinal problems. A few days ago, it was like it affected her bowel movements which was unusual for her; usually she was right on the button and everything's fine. At first, she thought it was something she ate, but it happened again late last night, she did not know what to think. The patient wakes up a lot. She feels uncomfortable and gets to the bathroom and has trouble then has a bowel movement. The intestinal thing has her concerned. Normally she has normal and regular bowel movements but this time she felt ill and she does not want to deal with this as this is not a usual thing. She hated to look forward to the second shot and have this again. She does not know if she has to be careful with what she ate. It's just terrible. Once she has a bowel movement it leaves her feeling wiped out. She clarified this was after the Covid 19 vaccine. The patient asked if these symptoms were normal and if she will have these symptoms again with the second dose and was upset over the side effect. It was reported that the tests that were done at her age showed they would not have any reaction and the second dose would be the same. She has heard things that the first dose is nothing and the second is worse. It was reported that the patient has gained some weight over the past year while she has been in the house doing nothing. It was reported that the patient was due to get her second shot on 26Mar2021.