I started to bleed from the rectum really really bad; my immune system is compromised; I am overweight; I am really tired; This is a spontaneous report from a contactable consumer (patient). A patient of unspecified age and gender received bnt162b2 (Pfizer COVID-19 Vaccine), dose 2 via an unspecified route of administration on 30Mar2021 (Batch/Lot number was not reported) as DOSE 2, SINGLE for covid-19 immunisation. Medical history included asthma. The patient's concomitant medications were not reported. The patient previously received the first dose of bnt162b2 on an unspecified date in 2021 for COVID-19 immunization. Consumer stated, "I had 2 COVID Vaccines. My last one was 30Mar2021. Anyway, it had been may be a month or two afterwards I started to bleed from the rectum really really bad and I was getting these like 'hemorrhages' (not clear). It looked like clots to me big as my hand. The healthcare asked me why I come out there. Why did you come out there if you were bleeding like that? So, I went out there, anyway, they got me room, put me in there, everything and anyway, had to go, did a blood transfusion. I had to get all that done and then you know, take a colon 'off did go through that well', round up that blood transfusion, had to go to hematologist and they said, they would never know if this had come from the COVID shot, the vaccine, they said the would never know. They put me on Iron pills (Intent: Treatment) and I take them every other day and I take Calcium D3 (Intent: Treatment) and I have been to nursing home. But anyway, I am due for my booster and I don't know quite what to do. If 'dying' if you do and 'dying' if you don't." Consumer further stated, I took both of them. and I am (word not clear) and I have Asthma. So, my immune system is compromised. I am overweight (further clarification unknown), to be honest about it and I am worried because I am around people that will not take them shots. They have been saying blah blah blah but anyway I did my duty as a hero to do all this. So I am due for the booster. The doctors say go ahead and take it but I am a widow, I am by myself and it is scary to go get it. My husband was a medical professional as well. He was a dentist. I wonder, have you had any calls about anybody bleeding? Consumer further stated, I do not know if I should carry that booster or not. I do not know what to do. Consumer further stated, It really upset me and it was scary to go get it. Consumer stated, my hematologist doctor, he said to take it and my gastroenterologist said to take it. They said it really up to me. Consumer stated, I am really tired. I hope we get cure for this. I do not want to see all these people(further clarification unknown) passing away I have had enough in my family myself. The loved ones it is horrible, not seeing people had this in past they are family it is sad. After we take this, do we have to take another shot, another booster? People would take them like Flu shot. Therapeutic measures were taken as a result of "I started to bleed from the rectum really really bad". The outcome of the events was unknown.  The lot number for the vaccine, [BNT162B2], was not provided and will be requested during follow up.