My Heart sucks

My heart has been acting weird today. Not even emotionally. Literally. I know I have mentioned it befor but for those who don't know, I have a heart problem, and I am used to the every once and a while palipetations(sp?) But I have had the weird flutter and pounding almost all day and it has been making me light headed and tired. Its weird. Now I'm gonna have to make another doctors appointment. Ugh!