What Causes Intermittent Heart Palpitations And Pain In The Temple Region?

I have been having intermittent heart palpitations for about a year now. I had a 4x bypass surgery in June, 2014. During that operation the surgeon performed a maze procedure. I did not have a big problem with palpitations before then. within the past couple of weeks I am getting this unusual sharp pain in my temples that lasts about a second or two. The sharpness goes away, but I will have a dull ache for about a half hour after. This happens once or twice a day. I can t pin down what triggers it but the palpitations have been fairly constant for about the last month.