VOMITING; DIARRHEA; THROWING UP BILE; HEADACHE; EQUILIBRIUM OFF; RINGING IN EARS; TREMORS IN LEGS AND ARMS; WEIRD DREAMS; NAUSEA; HIGH BLOOD PRESSURE; DID NOT EAT MUCH; FELT LIKE GOING TO PASS OUT; LOOKED WHITE; FELT OF HAVING HEART ATTACK; SWEATING; BARELY GET OUT AFTER SHOWER; NOT FELT WELL; NIGHT SWEATING; LOST 16 POUNDS; HARD TO BREATH; RACING HEART; FELT LIKE PINS AND NEEDLES (TINGLING) IN MOUTH; BRUISING EVERYWHERE; FELL OUT OF BED; This spontaneous report received from a patient concerned a 59 year old female. The patient's height, and weight were not reported. The patient's past medical history included hemorrhoid surgery, and concurrent conditions included blood pressure. The patient received covid-19 vaccine ad26.cov2.s (suspension for injection, route of admin not reported, and batch number: 042A21A expiry: UNKNOWN) dose was not reported, 1 total administered to right arm on 10-APR-2021 for prophylactic vaccination. No concomitant medications were reported. On10-APR-2021, the same day after vaccination the patient was doing fine. On 11-APR-2021, the next day after vaccination started to not feel so great and got worse as the day went on. The patient could barely reach her husband after shower and felt like she was going to pass out, heart racing, felt like pins and needles (tingling) in mouth and head felt very swollen, hard to breath, had a headache, night sweating (2-3 times per night) and weight loss (lost 16 pounds). The patient's husband called the emergency services almost 24 hours post vaccination. The patient did not feel herself and was sweating. The patient's heart was checked and was normal. The patient looked pale but decided to stay home. The same night remained on and off and patient felt of having a heart attack and her neck felt funny. On 12-APR-2021, the patient did not felt well and did not eat much, but was not as bad as the previous day even though it would come every 3-4 hours. On 13-APR-2021 at 03:00 AM in the morning, the patient experienced vomiting, and throwing up bile, diarrhea until 08:30 or 09:00 AM. On the same day the patient went to the hospital and had to spend most of the time in out-patients section with ongoing vomiting. The patient administered Zofran (ondansetron) and then experienced a worsening headache. The patient experienced high blood pressure on the same day. The patient's laboratory data included blood test  and computerized tomogram (CT) brain scan without contrast which was normal and was given intravenous morphine. The patient was sent home with prescription for Zofran (ondansetron) 4 milligram and Butalbutal/acetamin/caffeine tablets and came home on the same evening by 4/5 PM. The patient experienced on and off headache and fell asleep at 03:00 AM and on 14-APR-2021 she woke up with diarrhea and started to experience nausea and vomiting. The patient's diarrhea resolved on 14-APR-2021 or 15 APR-2021, but she her nausea persisted. On an unspecified date in APR-2021, the patient experienced bruising everywhere, ran into wall one night and fell out of bed. On 15-APR-2021, the patient experienced tremors in legs (currently worsening) and arms (new onset) and had weird dreams. On 22-APR-2021, the patient experienced equilibrium off and ringing in ears and her blood pressure as normal. On 23-APR-2021, the patient again experienced ringing in ears. It was reported that, the patient did not feel well for 14 days. The action taken with covid-19 vaccine ad26.cov2.s was not applicable. The patient recovered from throwing up bile, and diarrhea on APR-2021, vomiting, and high blood pressure on 22-APR-2021, hard to breath, and felt like pins and needles (tingling) in mouth on 11-APR-2021, racing heart on 15-APR-2021, lost 16 pounds on 23-APR-2021, and equilibrium off on 24-APR-2021, was recovering from headache, nausea, and ringing in ears, had not recovered from tremors in legs and arms, night sweating, weird dreams, bruising everywhere, and sweating, and the outcome of barely get out after shower, not felt well, did not eat much, felt like going to pass out, looked white, felt of having heart attack and fell out of bed was not reported. This report was serious (Hospitalization Caused / Prolonged).; Sender's Comments: V0:20210449836- COVID-19 VACCINE Ad26.COV2.S-Throwing up bile, Vomiting, Diarrhea, Headache. This event(s) is considered unassessable. The event(s) has a compatible/suggestive temporal relationship, is unlabeled, and has unknown scientific plausibility. There is no information on any other factors potentially associated with the event(s).