On Thursday, April 8, 2021, between 915 and 945 AM, I received the Janssen/Johnson & Johnson single dose COVID-19 Vaccine. As I have had adverse reactions to vaccines in the past, I was advised to wait at the vaccination site for 30 minutes after receiving the vaccine, and I did. Approximately 2 hours after receiving the vaccine in my left arm, I developed a red lacey-type rash all over my body. (This rash still persists today, Tuesday, April 13, 2021 at 3:37 PM and is relieved temporarily with consistent doses of Benadryl capsules, liquid or tablets.)  On Thursday night (April 8), after receiving the vaccine, I began to have body aches and to feel fatigued around 7:30 PM. I took 50 mg Benadryl, 500 mg acetaminophen, 800mg ibuprofen and went to bed. I woke around 12:30 AM and was drenched in sweat and my clothes were wet with sweat. I urinated and went back to bed and was shivering uncontrollably from the time I got out of bed until I got back in the bed and bundled up?it was several minutes before the shivering stopped and I went back to sleep. At approximately 2 AM, I woke up to urinate again. I had a terrible headache, like my head was in a vice; my tongue, throat, and nasal passages were very swollen, and it was difficult to breathe through my nose at all. I took an additional 50 mg of Benadryl and a 500mg acetaminophen and went back to bed. On Friday morning I woke to a phone call from work checking on me. I had slept through all of my alarms and it was 8:35 AM. I was unable to report to work that day and went back to sleep and slept for most of the day, only getting up occasionally to get a drink and use the bathroom. That evening I was able to get up and do a few things with the children and run to the grocery store, however, I became very fatigued and went to bed early without eating dinner.  On Saturday morning, when I woke up, I realized that I had slept for over 12 hours. I was groggy and fatigued all day and had a nap in the afternoon. That evening I was able to participate in family movie night and was feeling ok until about 10 PM. At that time, I began to feel very nauseated and had diarrhea, even though I had not eaten anything that would upset my stomach. I had intense abdominal cramping and felt like I would vomit if I moved around too much. I went to bed and had to get up to use the bathroom with diarrhea at least twice after the initial symptoms at about 10 PM.  On Sunday morning, I woke up after sleeping approximately 10 hours and was able to get up without feeling too fatigued. I did chores and errands and began to feel fatigued in the afternoon and took a nap for about 2 hours. That evening I also had to rush to the bathroom with diarrhea, however, there was no nausea. I went to bed at about 10 PM. On Monday morning, when I woke up, I felt very groggy and did not feel like I had gotten enough sleep. By the evening on Monday, however, I had begun to feel a little less fatigued and more clear-headed. As of Tuesday, April 13, 2021, I have had the red lacey-looking rash intermittently since having the vaccine. I am already on several OTC allergy medications for seasonal allergies and continue to take those medications, however, I have increased my Benadryl intake from 25 mg in the morning to 50 mg in the mornings with 25 -50 mg every 6 hours or so, as well. The rash improves for a short time while I am taking the Benadryl, but it reappears within a few hours after taking the Benadryl.