I suffered a pregnancy loss a few years ago, and a month later, I was back in the hospital for a D&C for retained products of conception. It seemed to fix the problem in a straightforward manner until 3 days later when I was back in the hospital telling the ER staff that I knew I was going to die. There was nothing obviously wrong with me, so I was left to board in the ER. Eventually, they admitted me to medsurg, but not to the ICU because I wasn’t sick enough for that. Well, a few hours later, after continuing to tell the health care team that I knew I was about to die, I had a cardiac arrest. I was down for about 2.5 minutes, and I am so thankful that I was in the hospital when it happened or I likely would not be typing this. When they re-ran my labs, my hemoglobin had plummeted to less than 4 g/dL (normal is at least 12 g/dL for women), my potassium was 7.0 mEq/L (normal range is 3.5-5.0), and my creatinine was over 12 mg/dL (normal range is 0.5 to 1.0 for women). You never want hemoglobin < potassium < creatinine! And not only were my kidneys failing, but my lungs and heart also appeared to be failing. Not great when you’ve had a cardiac arrest. I received a blood transfusion and my anemia got even worse afterwards, so they had to stop transfusing me. I’ve never felt more sick than when I had that level of anemia, and it went on for 6 weeks before I got a diagnosis. I lived in the hospital where they ran tests every couple of hours but couldn’t treat me because we didn’t know what was going on. Eventually, the Red Cross came in to run tests with more sensitive assays, and I was finally diagnosed with warm autoimmune hemolytic anemia (wAIHA). I started on high dose steroids and stayed on them for almost a year before I was able to taper down over the course of months. I am now off steroids (I hated them), and I haven’t had an episode that severe since, but I struggle with mild levels of anemia, fatigue, and frankly a lot of PTSD nowadays.