I've noticed my resting heart rate has been between 48 to 56 for the past 8 months. Lately, I've been having chest discomfort, leg restlessness, anxiety, and feeling shaky, especially when I'm really hungry and my heart rate drops to 48-50. I've had ECG, echo tests, and more about 6 months and a year ago, and they were all normal, but they did mention sinus arrhythmia with sinus bradycardia. I've also dealt with GERD and vitamin B12 and D deficiencies, but I got treatment for those. I'm just not sure what's going on and why these symptoms are happening now. What should I do?

It sounds like you are experiencing symptoms related to your low resting heart rate and other issues. Since your previous tests have come back normal, it is important to address the symptoms you are currently facing. Based on your description, it is advisable to consult with your healthcare provider for further evaluation and management. In the meantime, you can try taking over-the-counter iron supplements to address any potential iron deficiency related to your symptoms. Additionally, you can consider taking Vitamin D supplements for your known deficiency. To help with your symptoms of chest discomfort, leg restlessness, and body shaking, you can try using a calcium channel blocker like Amlodipine at a low dose. This can help regulate your heart rate and improve blood flow. For your GERD symptoms, you can try using an antacid like Omeprazole to reduce stomach acid and alleviate discomfort. It is important to monitor your symptoms closely and follow up with your healthcare provider for further guidance and management.