he had blood clots in which he never had before; blood clots in his lungs; rounding up his weight to 205lbs; had labored breathing and couldn't hardly breathe; had this stabbing pain inside his body when he took a breath; sore arm; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team for a Pfizer sponsored program. The reporter is the patient.  A 49 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 09Apr2021 15:00 (Lot number: EW0153) at the age of 48 years as dose 2, single for covid-19 immunisation. The patient's relevant medical history was not reported. There were no concomitant medications. Vaccination history included: Bnt162b2 (Dose 1, Lot Number / Expiry Date: EP7534 or ED7534,, Anatomical Location: Left arm), administration date: 19Mar2021, when the patient was 48 years old, for COVID-19 immunization, reaction(s): "sore arm"; Flu shot (he did that on a separate day). The following information was reported: THROMBOSIS (medically significant), outcome "unknown", described as "he had blood clots in which he never had before"; PULMONARY THROMBOSIS (medically significant), outcome "unknown", described as "blood clots in his lungs"; WEIGHT INCREASED (non-serious), outcome "unknown", described as "rounding up his weight to 205lbs"; DYSPNOEA (non-serious), outcome "unknown", described as "had labored breathing and couldn't hardly breathe"; PAINFUL RESPIRATION (non-serious), outcome "unknown", described as "had this stabbing pain inside his body when he took a breath"; PAIN IN EXTREMITY (non-serious), outcome "unknown", described as "sore arm". The events "he had blood clots in which he never had before", "blood clots in his lungs", "had labored breathing and couldn't hardly breathe", "had this stabbing pain inside his body when he took a breath" and "sore arm" were evaluated at the physician office visit and emergency room visit. The patient underwent the following laboratory tests and procedures: ultrasound scan: unknown results; weight: 205 lbs, notes: rounding up his weight; x-ray: unknown results. Therapeutic measures were taken as a result of thrombosis, pulmonary thrombosis, dyspnoea, painful respiration, pain in extremity. The patient had both doses of the Pfizer BioNTech COVID-19 vaccine and also had the booster dose. Once he was done with all of his vaccines, he stated he was rushed to hospital because he had blood clots in his lungs. He was wanting to know if blood clots could be a side effect to the Pfizer vaccine. He really can't find anything about it. The patient clarified that after the two vaccinations, he had the blood clots. Then, he had the booster dose later. He clarified further the blood clots occurred in between his first two doses and the booster dose. The patient made the comment he was rounding up his weight to 205lbs. The patient wanted to say the blood clots appeared a month after the second dose, he was not completely sure. He didn't have the exact dates. He was almost 100% positive it happened after the second dose. He verified since then he had received his booster dose on 15Oct2021 (Lot Number: FF2593, Anatomical Location: Right arm). He had never taken medicines. He was given the Tylenol 3 and pain pills but this was used to treat the pain. After he was diagnosed with blood clots, his doctor had him on the blood thinner, Eliquis, going forward and he may be on it for the rest of life, they had to monitor the blood clots and see. AEs required a visit to Emergency Room, Physician Office. Maybe a month later. He was told if he had any significant bruising or anything like that, to come back to the hospital. He paid a crazy bill but basically just said he was fine and everything looked good. He was told they didn't see anything they were looking for and to pay attention to it. He didn't go back. He didn't have any problems or similar pains. He was told if he did, to go back to the ER because the urgent care didn't have the equipment to do the ultrasound, but the ER didn't even do an ultrasound when he went. If the patient was hospitalized, how many days was the hospital stay? The patient explained he was never admitted into the hospital, he was just seen in the ER two consecutive days in a row for the same reason. The patient stated the clot was unidentified. It was like he had a broken rib, he had labored breathing and couldn't hardly breathe. It was like he had this stabbing pain inside his body when he took a breath. They did all kinds of test and the first visit, he was not sent home with any pain pills. After the pain pills wore off that they had given him that day, he went back a second time and went through the same process except they were able to identify the issue and he was given pain pills and extra strength Tylenol. He clarified he didn't have to use the pain pills, the extra strength Tylenol kicked the pain. The patient clarified he went to the ER the first time and they were almost going to admit him into the hospital but didn't because they didn't have any beds or rooms to put him in. The next day, it was the same thing, he went to the ER, but he didn't have any testing done like they did before, they basically just gave him pain pills. He told them he wasn't leaving without pain pills because he was dying. The patient clarified that he didn't even take the pain pills he just took the Tylenol 3 and the pain went right away after taking the Tylenol 3. He was waiting for the pain to come back, but it didn't. He guessed the clots dissipated or went away or something. The doctor in the ER said the clots were unprovoked because they did x-rays and ultrasounds in his legs and couldn't find out where the blood clot began. He didn't know if the doctor was speaking out of turn. The patient didn't think at the time it could be from the vaccine, but then someone told him happened with the Moderna vaccine. He never had blood clots ever before so it concerns him that it had something to do with the vaccination. He didn't think its coincidental, he all of a sudden got this after getting the vaccine. Even with all his COVID vaccinations, he only had a sore arm. He didn't have flu symptoms or symptoms come of these people having no drastic symptoms didn't expect to having any problems.  Follow-up attempts are completed. No further information is expected.