THOUGHT WAS HAVING A HEART ATTACK; VASCULAR INSUFFICIENCY; OXYGEN LEVEL DROP; HEART MURMUR; ANXIOUS FEELING IN CHEST; OUT OF BREATH; HEART WAS BEATING OUT OF CHEST; This spontaneous report received from a health care professional (nurse) via a company representative through mediaconcerned a patient of unspecified age, sex, race and ethnicity. The patient's height, and weight were not reported. The patient's pre-existing medical conditions included: Patient itself was nurse (other healthcare professional). The patient used to be quite active. The patient had previously received covid-19 vaccine ad26.cov2.s (Dose number in series 1) (suspension for injection, route of admin, and batch number were not reported, expiry: UNKNOWN) dose was not reported, 1 total, administered on unspecified date for covid-19 prophylaxis. It was unknown whether patient had any adverse events following vaccination with first dose of covid-19 vaccine ad26.cov2.s. (Dose number in series 1). The patient received covid-19 vaccine ad26.cov2.s (Dose number in series 2) (suspension for injection, route of admin, and batch number were not reported, expiry: UNKNOWN) dose was not reported, 1 total, administered on 29-OCT-2021 for covid-19 prophylaxis. The batch number was not reported. Per procedure, no follow-up will be requested for this case. No concomitant medications were reported.  On NOV-2021 approximately after two weeks after vaccination, the patient experienced out of breath, and heart was beating out of chest (Dose number in series 2). On an unspecified date, the patient thought was having a heart attack, and experienced vascular insufficiency, oxygen level drop, heart murmur, and anxious feeling in chest (Dose number in series 2). Laboratory data (dates unspecified) included: CT scan Everything looked good, Lab test could hear a heart murmur; Nuclear stress test Everything looked good, Oxygen saturation (NR: not provided) 96 %, 92 %, Stress test Everything looked good, and Walking distance test resulted in a 96 percent oxygen level drop into about 92 percent drop oxygen level. Treatment medications (dates unspecified) included: cetirizine, and famotidine. It was reported as "Johnson & Johnson I did but the doctors do not acknowledge any such thing. So I'll report to you my ailments. And you can acknowledge it or dismiss it like everyone else. I took the second Johnson & Johnson shot on October 29th. I'm a nurse. I walk from my parking lot to the front of the hospital every day that I work. Approximately two weeks after I got the second shot I couldn't walk from my car to the front of the hospital without giving out a breath. My heart was beating out of my chest. This went on for a about 2 months. One night at work I had a patient that went into cardiac arrest. I couldn't even do CPR (Cardiopulmonary resuscitation) for a minute. This not only affected my life it affected my patients lives. Side note I've got some wonderful teammates and emergency response team that saved this man's life. About a week later I went to work and thought I was having a heart attack. I went to the emergency room when I got off of work the next morning.. the six minute walk test resulted in a 96 percent oxygen level drop into about 92 percent drop oxygen level. None of my labs came back positive so I was sent to do a follow up with my doctor and my doctor sent me to a cardiologist. He did all the normal work the CT scan, the stress test, in the nuclear test. Everything looked good. But upon further inspection you could hear a heart murmur. I have never had a heart member before. During this time I had developed what I thought was ringworm on my legs. Ringworm, Well, I went to the dermatologist I pulled up my pant leg and she said that's not a rash that's vascular insufficiency. What! Vascular insufficiency I said. It was suggested by somebody that I take famotidine and cetirizine. I took it over the course of one month. I wore compression stockings. That was in January. When I stop taking the famotidine and cetirizine I would get anxious again. So I took the cetirizine and famotazine until July. For the most part it worked I still have and anxious feeling in my chest and can't do as much as I used to do. I used to be quite active. I'm still active. But I just give out a breath. There is no doubt in my mind that these two shots caused an attack on the valves in my body. One day I hope people listen. I told everyone when all of this started coming out that this was more than just a virus". The action taken with covid-19 vaccine ad26.cov2.s was not applicable. The patient recovered from heart was beating out of chest, had not recovered from anxious feeling in chest, and out of breath, and the outcome of heart murmur, vascular insufficiency, oxygen level drop and thought was having a heart attack was not reported. This report was non serious.; Sender's Comments: V0-Medical assessment comment not required as per standard procedure as the case was assessed as non-serious.