hi doctor. im 26 , 5 4 and 50kls in weight. when im at rest i always felt that my heart will stop in beating, then later on il start to palpitate and sometimes worst cause me to hyper ventilate and now feeling of numbness in my arms and legs. my doctors sees nothing wrong with me, he just advice me not to drink alcohol which i did but still nothings change. what could be the problem??