my health is deteriorating

it started with a sneeze. i felt choked and dull pain over chest for a short while. nothing happen after that. then recently, i had severe constipation and bloatedness, i keep burping nonstop, gastric reflex and sorethroat. i also felt the food i ate choke at my throat and esophagus. the worse thing is i felt pleuritic pain upon inspiration. these symptoms affect me badly. i dont feel hungeror any appetite. like yesterday, i ate one banana and few almonds. today, i ate one egg only. i told my mom about it and she ask me to see a doctor. im scare.. i scare that the pleuritic pain will turn out to be pneumothorax or pulmonary embolism. its been like 2 weeks already. i really hope it will get better before my oct travel to taiwan. T.T

[updated 21/8/2013] dropped 2-3kg.. food still stuck at throat and esophagus. i need help!