hi doctor am feeling nausia,weakness,some time ches pain n heart burning,dont know whats wronge with me,if am taking any medicine am feeling more weakness,like am thinkg that medicine is not good for me,feeling gas n heavy stomich,coz of weakness am feeling that i can not see n i fell down:-( am 23 years old n weight 61 kg....plz suggest me any thing n tell me that every thing is ok with me