feet are swollen; she can barely stand; My period is longer than usual / It gushes out like clots tissue of blood; stomach start hurting; My period is longer than usual / It gushes out like clots tissue of blood; This is a spontaneous report from a contactable nurse (Patient herself). A 43-year-old non-pregnant female received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Lot number: EW0180, Expiration date: Not reported) on 05Jun2021 via unspecified route of administration in the left arm as dose 1, single for COVID-19 Immunization. The patients medical history includes arthritis and pineapple allergy from and unknown date and unknown if ongoing. The patients concomitant medications were not reported.  The patient had no other vaccine in four weeks and no other medications in two weeks. The patient was not tested for COVID-19 prior to vaccination and not post vaccination. On 06Jun2021 the patient experienced under my stomach start hurting on 6Jun2021. A week after, my period came on 12Jun2021. My period is longer than usual. It is now 7 days and it is still going. It gushes out like clots tissue of blood and she can barely stand, feet are swollen on an unknown date. The reporter assessed the events as non-serious. On an unknown date the patient has done Sonogram result was unknown (not sure, thinks ok) and blood test on 26Jun2021 and was waiting on results. The patient stated she's experiencing after the first dose of the Pfizer BioNTech Covid 19 Vaccine. Reported about three symptoms, with the first symptom starting the day after on 06Jun2021, she started experiencing stomach pain, she described as persisting, it comes and goes, and this lasted an entire week, and still experiences this from time to time. The second adverse event is her feet are swollen and she can barely stand. And the third, and this is her primary concern is, on 12Jun2021, she had her menstrual period, and up until today, she is still having her period. Transfer agent clarifies from 12Jun2021-28Jun2021. Agent reports Reporter has already spoken with her doctor and was advised and is taking transaxemic acid, 650 mg, takes two of these every 8 hours, to relieve the excessive bleeding. States Reporter reports she has no prior history of heavy bleeding, just experienced this after the first dose. Transfer agent adds, Reporter may also report she did google some of the information, and it's not only her that experienced this adverse event. Transfer agent states he has already answered her medical information question. Reporter stated she does have time to go through questions when queried by agent, because right now her health was not good, because she keeps bleeding, keeps having her period, since she took the Pfizer thing. reporter provides her primary care doctor, but states they are not the one that gave her the transaxemic acid. Exact address unknown to Reporter and email address not provided. Reporter states she took the medication on 05Jun2021, then on 06Jun2021, her stomach started hurting, and was heavy, so the whole week on and off, it was hurting her and getting heavy, the whole week, Then on 12Jun2021, her period came and from 12Jun2021, until today 28Jun2021, she still has her period, and it's still going. Reporter confirms she reported all events on initial report, including stomach pain and swollen feet, when queried by agent. Reporter looks for report reference in her phone, and then vaccination card, and call was disconnected. Agent reached Reporter back on outbound call, and Reporter states she has the Pfizer thing I was asking her about, it was a screenshot. Reporter states when she was looking for the other information, she found the other information for agent. The patient reporter the treatment stated she started the tranexamic acid this past Saturday, she went to her GYN, but was seeing her primary doctor this week. Reporter stated she did tests with her GYN, and Saturday, she took a blood test before she went to take medication and is waiting on test result. Reporter states she thinks they did a sonogram or something, and not sure of results, but thinks it was ok. Reporter states she has to see her in ten days. Reporter has not been to emergency room, only to the doctor visit, but states if this continues, she may go to the emergency room to get a second or third opinion. Reporter confirms dose of transaxemic acid as provided by transfer agent of 650 mg, takes two, every eight hours. Reporter states, one more thing, when her period comes, it comes like clots, like when she goes to pee, it's a bunch of clots that she sees, a lot of clotting. Reporter is not sure, but states maybe she included it on initial report, it was on the eighteenth, and she thought this would have been done by now. Reporter asks, do you know how bad it is to get your period constantly?. The outcome of the events was unknown.  Information on Lot/Batch number was available. Additional information has been requested