Irregular heartbeat, fainting for 6

I am 20, the problem started 6 months ago when I visited to the doctor for my back pain and cough he gave me medicine and told me that it will cure within 1-2 days,but in clinic when he checked my bp it was too high 150/120,he gave me injection and gave me bp medicine. when I take cough syrup my heart beats increased so fast I started fainting,I called the doctor immediately he told me to take water after some time I feel better.when I visited to the doctor he told me that I can't take cough syrup and painkiller and given me test.[My ecg (115 beats) sinus tachycardia, lipid profile [total cholesterol-164] [ldl-103] [hdl-42] [vldl cholesterol-19] [triglycerides-94] [cholesterol hdl ratio-3: 9] biochemistry- venus plasma glucose (fasting)-107 urea-20, creatinine-0.87, uric acid-6.1,haemoglobin-13.8,thyroid report-tsh (3rd gen)-2.03.]Medicine-Triolmighty 20,Etilum pro 20,Pansef dsr,Criz m,mignil 20,vertin16m,omnicef 200, emiful m,Can anyone help me please is this curable permanently???