Sinus Tachycardia More Condition_symptoms Is It Normal To Have A Sinus Tachycardia?

Is it normal to have a sinus tachycardia? - sinus tachycardia more condition_symptoms

I am diagnosed with sinus tachycardia and I'm really about what normal.sometimes I have a pain in the chest, and I'm always nervous and my heart was beating so fast, it's like climbing a mountain, I am confused.