I'm feeling a vibration sensation in my left chest that's been going on for a few seconds at a time. I had an ECG and ECO test done, and both came back normal, and the doctor told me that I don't need any medicine. But I'm still experiencing it sometimes, and I'm just wondering how long it might take for this vibration to stop?

In this case, you may be experiencing palpitations or muscle spasms. To help alleviate these symptoms, you can try taking a beta-blocker medication such as Metoprolol 25mg once daily. Additionally, practicing stress-reducing techniques such as deep breathing exercises or yoga may also be beneficial. If the symptoms persist or worsen, it is important to follow up with your doctor for further evaluation.