Pain in various areas. We be worried?

(sorry if my english is bad, as it is not my native tongue) My girlfriend has some wierd symthoms and i wanted to know if any of them is related to any serious ilness. First of all she sometimes says that she feels slight pain in her heart, it's like there is a needle in there. Also she sometimes feels her leg becoming numb and it's only her left leg and there is a pain in her left foot, at the sole to be exact and it's like bone pain which progreses when she walks. also she sometimes feels a pain in her abdominal area left or right, never both at once, it's at a belly button hight. And finally she sometimes experiences a short lasting quick pain in the temples of her skull it makes her dizzy for a moment. what could it be and should we be worried?