Why does my heart beat so fast??

Is fast heart beat normal ?
your current symptoms doesnt suggest at serious medicl condition as your tachycardia wasnt accompanied with other symptoms , but you still need to do medical examination to figure it out and rule-out any serious medical condition 
What to do next :
- consult an internal medicine doctor 
- do the following test :
1. clinical check by the doctor 
2. vitals such as blood pressure and repiratory rate 
3. blood and kidney tests 
4. ECG 
What is the possible treatment options ?
- usually in this case and if its related to blood pressure , doctor will prescribe medication to regulate your blood pressure such as : 
1. beta blockers : Propranolol
2. anti-arrythmtic medication such as : amiodarone