Patient received her first dose of the Pfizer BioNTech Covid 19 vaccine on 25Jun2021 while 5 weeks pregnant; Spotting; Cramping; Her HCG levels had decreased/ HCG levels were lowering; Then 2 weeks later she had the actual miscarriage; bleeding from the miscarriage.; This is a spontaneous report from a contactable consumer, the patient. A 32-years-old pregnant female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection, Batch/Lot Number: EW0187), via an unspecified route of administration, administered in left arm on 25Jun2021 (at the age of 32-years-old) as Dose 1,Single for COVID-19 immunization. The patient's medical history included allergy to Nickel from an unknown date and unknown if ongoing. There were no concomitant medications. Additional Vaccines Administered on Same Date of the Pfizer Suspect was none. No prior vaccinations within 4 weeks were taken. LMP (Last Menstrual Period) was on 25May2021 and the mother was due to deliver on 01Mar2022. Patient wanted to ask if in the clinical trial for pregnant women, are women in their first trimester included or not. Patient received her first dose of the Pfizer BioNTech Covid 19 vaccine on 25Jun2021 while 5 weeks pregnant. She received her second dose of the vaccine on 29Jul2021 after experiencing a miscarriage. A few days before her first dose, she had bloodwork done showing her HCG levels were 6000 to 7000. Three to four days after the first dose she went to the ER for spotting, cramping and ultimately a miscarriage. Her HCG levels had decreased when they were rechecked at the ER. Her doctor told her that one in four women have miscarriages but she was calling to see if spotting, cramping or miscarriage are side effects of the vaccine. Patient also stated when she received the second shot there was a question on if she was pregnant or planning to become pregnant and she asked why that one was there and if she should wait a certain amount of time before trying to get pregnant again. Patient stated that she was calling about the Covid Vaccine, when she got the vaccine, shortly after she had a miscarriage, she was 5 weeks pregnant. The baby was fine up until that point but after she got the vaccine the baby stopped growing and her HCG levels started to decrease. Then 2 weeks later she had the actual miscarriage. She went to the doctor 3 weeks after she got the vaccine. With the spotting and everything that was when the HCG levels were lowering. She just went to the doctor before getting the covid vaccine. She was not sure if there was a correlation, Miscarriages happen for all reasons, it was a first trimester pregnancy, she did not know if this was happening to other women, but she tried to research it, but for her and for pregnant women people are so strict with medicines and they were just telling pregnant women to go get the vaccine, maybe not in the first trimester, maybe she should have waited till the baby was stronger. Her First Dose was on 25Jun2021, the spotting started about 3-4 days after, because she was spotting and cramping she went into the emergency room, this was at the end of Jun2021. She was not admitted into the hospital, she came home the same day. Patient explained that right before receiving the covid vaccine she had a HCG levels test done prior, and then in the ER they did a HCG test and Vaginal Sonogram, they did both of those in the ER. A few days before receiving the covid vaccine her HCG levels were between 6-7 thousand, that was a day or 2 before she got the shot. Then in the ER on the 28Jun2021 or 29Jun2021 it was in the 5 thousand which was slightly lower, in the ER they told her that they could not say for sure, sometimes HCG levels might drop a little bit, but she needs to go back to doctor in the week. She had the doctor appointment in the first week of Jul2021, they checked the HCG levels during that visit, it did drop but it is Unknown to her, they probably told her but she was so sad that she was not paying attention. After the doctor appointment was when the actual miscarriage happened, during the doctor visit they told her it was an impending miscarriage, but she had never had a miscarriage before so she didn't know what was looking for, she thought she was having a period then all the sudden it happened. She just stopped bleeding a week ago, clarified bleeding from the miscarriage. Patient stated that she recalled her most recent visit to the doctor being on her daughter birthday 28Jul2021, her HCG levels were back to normal, clarified with reporter what level in specific does she mean by normal, but that she did not know. They did another internal Sonogram, to make sure everything came out in its own process, patient stated that she did not know too much on the dates of the events. She just knew that she went and got the vaccine shortly after that started spotting and cramping, she did not know if there was a correlation, it could be anything, the doctor said 1 in 4 women have miscarriages but women did not talk about. When queried Medical conditions caller states that she has never had a surgery or even broken a bone. The events then 2 weeks later she had the actual miscarriage, bleeding from the miscarriage, spotting, cramping and her HCG levels had decreased/ HCG levels were lowering resulted in emergency room and physician office visit. The patient underwent lab tests and procedures which included HCG Levels: did drop/ unknown to her (HCG levels during that visit, it did drop but it is Unknown to her), 6-7 thousand on an unknown date Jun2021 (A few days before receiving the covid vaccine her HCG levels were between 6-7 thousand), 5 thousands on an unknown date Jun2021 (Then in the ER on the 28Jun2021 or 29Jun2021 it was in the 5 thousands which was slightly lower), started to decrease on an unknown date in 2021 (she got the vaccine the baby stopped growing and her HCG levels started to decrease) and normal on 28Jul2021 (her HCG levels were back to normal), vaginal sonogram: unknown results on an unknown date in 2021 (They did another internal Sonogram, to make sure everything came out in its own process) and again unknown results on an unknown date in Jun2021. The patient did not receive treatment for then 2 weeks later she had the actual miscarriage, bleeding from the miscarriage, spotting, cramping and her HCG levels had decreased/ HCG levels were lowering. Reporter seriousness for then 2 weeks later she had the actual miscarriage and her HCG levels had decreased/ HCG levels were lowering was unspecified. Patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection,Batch/Lot Number: not reported) via an unspecified route of administration on 29Jul2021 (at the age of 32-years-old) as Dose 2,Single for COVID-19 immunization. The outcome of the events bleeding from the miscarriage and her HCG levels had decreased/ HCG levels were lowering was recovered on an unknown date in 2021, whereas the events then 2 weeks later she had the actual miscarriage, spotting and cramping was unknown.