I've been having some pain that's really bothering me, and I can't figure out if it's something serious. I'm 33, female, about 165 cm tall, and weigh 64 kg. Recently, I've been dealing with chest and upper back pain. It's weird because I feel really sharp pain when I lie down, but when I'm sitting up straight or walking, I don't notice it at all. It almost feels like there's something stuck in my throat, and when I swallow my saliva, the pain shoots to the center of my chest and then over to the right side and into my upper back. I also end up burping a lot and have the urge to pass stools when this pain kicks in. If I pay close attention, it seems like the pain starts on my back's right side and radiates to my chest. Is this something related to my heart?

It sounds like you may be experiencing symptoms of acid reflux or gastroesophageal reflux disease (GERD), rather than a heart-related issue. The sensation of something stuck in your throat, pain when swallowing saliva, chest pain that radiates to the right side, upper back pain, and frequent burping are all common symptoms of acid reflux. I recommend trying over-the-counter antacids such as Tums or Rolaids to help alleviate your symptoms. You can also try lifestyle modifications such as avoiding trigger foods (spicy, acidic, fatty foods), eating smaller meals, avoiding lying down immediately after eating, and raising the head of your bed. If your symptoms persist or worsen, it would be best to consult with a healthcare provider for further evaluation and management.