Talk to General Physician on Low Tsh Levels

i am having palpitations and rapid pulse from last 8 months,i also feel very weak and fatigued all the time,there is pulsing sensation in my whole body,whenever i put pressure on any part of body it starting feeling like a beating heart(pulsing),i am so scared of all this,i have done my throid function test twice and my tsh levels were suppressed both of the times but t3 and t4 are in normal ranges,if any could get me a good advice i would be greatful