for more than 2days know I have serious top back pain. after I got choke by swallowing white rice sometime one o'clock pm . I started feeling the pain like between 5 and 6 o'clock pm the same day. since that time I can't even breathe sometimes. it make me feel so uncomfortable and the pain is so severe that I can't even lay down. can the white rice went into my lungs fi so what is the risk. please help me