hai doctor i am robin 26yrs,i have some metalic taste in my mouth(taste of tamarind) in the both corners of mouth and feeling some gas is coming to the mouth like a menthol taste,i have constipation too since 1 month,am reducing my weight also,loss of appetite also since one month,have some nausea in the morning.am getting abdominal pain in between and it will reduce after 10-15 minutes or after passing motion,please help me sir......