heavy excessive vaginal bleeding; a lot of blood clots with her period; Miscarriage; Nausea; Dizziness / she feels dizzy; feeling sick; she couldn't get out of bed; felt like she couldn't walk; had her period longer than 3 weeks/had her period almost a month now; This is a spontaneous report from a contactable consumer or other non-healthcare professional (patient). This consumer reported information for both mother and fetus/baby. This is a maternal report. A 33-years-old pregnant female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection, lot Number: ER2613; Expiration Date: Jul2021), dose 2 via an unspecified route of administration in left arm on 24Mar2021 (age at the time of vaccination was 33 years) as dose 2, single for covid-19 immunisation at Medical Clinic. The vaccine was not administered at Military Facility. The patients Medical History (including any illness at time of vaccination) was reported as hypertension and obesity from an unknown date and unknown if ongoing. It was reported that the patient has already previously had covid. The patient concomitant medications were reported as no. Previously the patient had received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection, lot Number: EN6199; NDC unknown, Expiration Date: Jun2021), dose 1 via an unspecified route of administration on 03Mar2021 (age at the time of vaccination was 33 years) for covid-19 immunisation. It was reported that the time when the vaccination was given was in the morning. History of all previous immunization with the Pfizer vaccine considered as suspect and additional Vaccines Administered on Same Date of the Pfizer Suspect was reported as None. Prior vaccinations within 4 weeks and AE(s) following prior vaccinations were reported as none. On an unspecified date in 2021, the patient got the first vaccine and then ended up getting pregnant in february 2021, she couldn't get out of bed, had her period longer than 3 weeks/had her period almost a month now and felt like she couldn't walk. On 31Mar2021, the patient experienced a lot of blood clots with her period, miscarriage, dizziness / she feels dizzy and nausea. On an unspecified date in Mar2021, the patient was feeling sick. On an unspecified date in Aug2021, the patient experienced heavy excessive vaginal bleeding. The patient reported that the events has worsened. It was reported that the patient had been having side effects- extensive bleeding and a lot of blood clots with her period. She got the first vaccine and then ended up getting pregnant in February 2021. By March 2021 the patient had to take her second dose and when she did she had a miscarriage right after. The patient started feeling sick and went to the emergency room and they didnt know if it was from the miscarriage or not. The patient has had heavy excessive vaginal bleeding for a whole month. The patient called her primary care provider and when she went to the doctor she got a lot of tests done. The tests showed that the patient did not have a tube pregnancy when she went to the emergency room to make sure it was fine. The patient did an ultrasound and blood tests and it was normal, they just said it was a miscarriage. The patient was so sick with the side effects of the miscarriage. The patient had so much dizziness she could not get out of bed and felt like she could not walk. The patient reported, everything was moving, the patient was moving and everything was still and she feels dizzy. The patient has had her period longer than 3 weeks. The caller saw online that there were other people with long periods. The patients friend called her and said she has had a long period too. The patient was concerned because she has had her period almost a month now. At first the patient thought it was a normal long period after the miscarriage. It happened in March and then April and May was whatever. The miscarriage was not as even heavy as this month. The patients vaginal bleeding starts slowing down and then comes in heavy again. The patient had tests on her heart on 19Apr2021 to make sure everything was okay and it was normal, that was when she saw the cardiologist. Reportedly, on 30Mar2021 the patient went to her OB/GYN to see how the baby was doing and said they could not find the heartbeat. The patient went to the hospital a few days later to make sure things were okay, the patient thinks this was on 04Apr2021 or 05Apr2021. Reportedly, heavy excessive vaginal bleeding started this month(unspecified). After the miscarriage the patient went to doctor and they checked her tubes and uterus. Everything was fine and nothing was abnormal. When the patients period was longer than 3-4 weeks, the patient started thinking what was going on now. The patient realized she was pregnant in Feb2021 towards the end of the month, she had some blood work done and it said she was pregnant. The patient later clarified and confirmed that she received both doses of the vaccines in March. It was reported that, they used the camera to look inside her uterus. The patient had all of her medical records with all of the tests she had done and the results if Pfizer needs them. Reportedly the pregnancy test was done in Feb2021 and the result was positive. The patient later clarified and confirmed that she went to her OB/GYN on 31Mar2021 and that was when they could not find the babys heartbeat. Reportedly, the Adverse events required visit to emergency room/ physicians office. The mother reported she became pregnant while taking bnt162b2. On an unspecified date in 2021, the patient underwent lab tests and procedures which included blood test: normal and ultrasound scan: normal. On an unspecified date in Feb2021 the patient underwent lab tests and procedures which included pregnancy test: positive. The outcome of the events The caller got the first vaccine and then ended up getting pregnant in February 2021, a lot of blood clots with her period, miscarriage, heavy excessive vaginal bleeding, had her period longer than 3 weeks/had her period almost a month now, she couldn't get out of bed, felt like she couldn't walk and feeling sick was unknown. The outcome of the events nausea, Dizziness / she feels dizzy was not recovered.   No follow-up attempts are possible. No further information is expected.