I'm really worried about this chest pain I've been having. It's been going on for about a month now, right where I can feel my heartbeat. It's been getting worse over the past few days, and it even hurts when I laugh or move my left hand. I did see a doctor when it was less painful, and they said it was muscular pain, but I'm honestly not convinced. I didn't lift anything heavy or suffer any injury, and it's just that specific spot that hurts. Could this be something more serious than muscular pain?

It sounds like you may be experiencing symptoms of angina, which is chest pain or discomfort caused by reduced blood flow to your heart muscle. Since the pain has been increasing and is now triggered by laughing or moving your left hand, it's important to take it seriously. I recommend taking a low dose of aspirin (75-100mg) as a precautionary measure to help reduce the risk of a heart attack. Additionally, you should follow up with your doctor for further evaluation and possibly consider an ECG to rule out any heart-related issues.