Hello, so the other day my heart started beating really hard, & its not the first time that ive felt this, so last night my heart started beating really hard, and usually its just about 5 pounding beats, but last night it was more than 5 hard beats, it was beating really hard and it got to the point where i felt like i couldnt breathe. lately i havent been able to sleep either, and when i woke up today in the morning i had this really wierd feeling in my heart, and now in my heart area, my chest hurts, and i feel short of breath, i dont know if this is normal? or what should i do? please help