Platelet count low; Felt like my left nostril was dripping and it's just blood came out; it was coming down you know heavy and I never ever had the nose bleed; This is a spontaneous report from a contactable consumer reported for herself. A female patient of an unspecified age received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Formulation: Solution for injection, Batch/Lot Number: EN6207), first dose via an unspecified route of administration on 10Mar2021 as dose 1, single for covid-19 immunization. Medical history included anxiety from an unknown date and unknown if ongoing Verbatim: anxiety, glaucoma from an unknown date and unknown if ongoing Verbatim: Glaucoma in right eye, myasthenia gravis from an unknown date and unknown if ongoing Verbatim: Ocular Myasthenia Gravis, drug hypersensitivity from an unknown date and unknown if ongoing, drug hypersensitivity from an unknown date and unknown if ongoing. The patient's concomitant medications were not reported. Investigation Assessment was reported as yes. On an unspecified date, the patient experienced platelet counts low, felt like my left nostril was dripping and it's just blood came out; it was coming down you know heavy, and I never ever had the nosebleed. Consumer stated, "I just wanted to announce an adverse effect, but I also have a question. I have a low blood count (Later clarified as low platelets) out of the range. I have 132 you know when you get the blood test what's that part per thousand and the range you see is 140-400 on platelets. Not blood count, but platelets, sorry so I have the last one, my annual visit was in November with my doctor on 2020 but I have always been ranging under the 144 but 15 years or close to that between 132 to 135 just under that range and I got the first Pfizer shot on 10Mar2021 and two days later my left nostril was just drippy and it's been dripping, it been always drippy once in a while in winter time, what happen two days later was I was sitting at the table and all of the sudden I felt like my left nostril was dripping and it's just blood came out, a lot of blood have come out. I have never had a bloody nose you know I never did, and it kept coming out a lot and it took about 15 minutes for it to stop. I am just concerned, now tomorrow I am getting the second Pfizer shot. I know something about J&J shot but I googled Pfizer and Moderna and I guessed if you have low platelet count like its thrombocytopenia something like that, they did say there are some where we did can get a I did not have the technical term a brain bleed because of low platelet. All my other numbers are okay, all my blood counts are okay, the red blood cells the white blood cell the hematocrit everything is all right, the only thing that is always low is my platelet at 130 but all the other blood red blood cell white blood cell everything you know hemoglobin hematocrit all that, that's all fine that's the only one that is always in low." Consumer further stated, "It wasn't even dripping it just came out like a whole flow like a flow it doesn't drip just felt like something coming out like my son gets nose bleeds often (general statement) and it just comes right out so I just said Oh! Feel like I had a bad one, my nose is just running you know when you had a bad cold it just poured out sometime and it was just kind of poured out it was not dripping. So, I am just concerned I did not know if you have heard of that, will that be a concern I am just now sitting here scared for the second shot that I could get a brain bleed or that's not common." Consumer added, "I am highly allergic to Penicillin and anything like that. I am allergic to most of the antibiotics (Unspecified Medications)." Consumer stated "I have lab test for my annual checkup, my blood work. That was last year October or November 2020. I had blood work which was all normal except for platelet count I think that was like 132 and also my 'ANA' (Clarification unknown) is always off, on the blood works its nothing that shown up, but I had that like from 20 years." Consumer stated "No, I just held it you know I just put tissues there and held it and after about 15 minutes you know squeeze it and after 15 minutes it's stopped but it was coming down you know heavy, and I never ever had the nosebleed. The patient underwent lab tests and procedures which included blood test: normal in 2020, platelet count: 132. I have 132 you know when you get the blood test what's that part per thousand and the range you see was 140-400 on platelets, platelet count: 130, platelet count: ranging under the 144 in 2020 I have always been ranging under the 144 but 15 years or close to that between 132 to 135 just under that range, red blood cell count: everything is all right, white blood cell count: everything was all right. The outcome of the event was reported as unknown.  No follow-up attempts are possible. No further information is expected.