Asthma, Afib and PR above 95, SGPT high.

I have been suffering from asthma for last 10 years (using an Inhaler Sulbutamol). 8 months ago, suddenly i felt my heart bits irregular and after sleep at night It's gone. After months, i felt the same things again. Then i consulted with a Cardiologist, and diagnosed various tests like ECG, Ultra, Xray, Blood related test. My pulse rate is very high, day time It's always 90+, at night during sleep, it 75-85. My SGPT was 2.5 times higher than normal range. Then after two months, i diagnosed SGPT again and recently did the same. But it’s range almost 2 to 3 times higher than normal. The cardiologist specialist prescribed me- 1. Flecainide 1+0+1 2. Ecosprin 0+0+1 But, my condition is not getting well as i feel so. Moreover, when i walk or do anything under high sunlight, night at the same day starts irregular heartbeat but after a sound sleep, It's gone automatically. Please please suggest what should i do? Or With what specialist should i consult?