I've been having these sudden heart palpitations and some breathlessness since last week in May, and even when I do activities like slow walking or yoga, my heart rate spikes up to around 150-170. After seeing my cardiologist, I was on Inderal 10 mg for 2 months, but it didn't help much. Now I'm taking Betacap TR 40 and Daxid 25 mg, but sometimes my heart still races even when I'm just resting. My cardiologist mentioned that stress might be causing it. I'm really anxious to know when this might get better. I'm 31, breastfeeding, and all my tests like ECG, echo, thyroid, and sugar levels came back normal. I'm using my iWatch to track my heart ratehow reliable is that, or should I consider a different device?

Based on your symptoms and the medications you have tried, it seems like you are experiencing persistent tachycardia and palpitations despite the treatment. Since your cardiologist mentioned stress as a possible cause, it may take some time to see improvement as managing stress levels can be a gradual process. In addition to the medications you are currently taking (betacap tr 40 and daxid 25mg), your doctor may consider adjusting the dosage or trying other medications to better control your symptoms. It is important to continue following up with your cardiologist for further evaluation and management. Regarding monitoring your heart rate, while devices like the Apple Watch can provide useful information, they may not always be as accurate as medical-grade monitoring devices. If you are experiencing persistent symptoms and want more accurate heart rate monitoring, you may consider investing in a dedicated heart rate monitor recommended by your healthcare provider. It is essential to continue working closely with your cardiologist to address your symptoms effectively and monitor your progress over time.