Foul taste in the back of my throat, usually after burping, (more frequently than my norm) - for 5 days now. exception: waking up w/ taste on 1st day. besides minor indigestion after takeout (3rd day) - no heartburn/throat/reflux related symptoms?

Reduce intake: What you described could be from overeating. Reduce your intake of food, especially in the evening. Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/. Get HPV vaccine. Wish you good health!