I periodically have a burning, acidic sensation in ...

http://www.medicinenet.com/gastroesophageal_reflux_disease_gerd/article.htm

acid reflux, maybe.

however, i experienced the exact same pains and the ER doctors kept telling me acid reflux, and when i finally got bloodwork done, it turned out i had gall stones.  although, having gall stones was excruciatingly painful and eating made it worse. 

but i would definitely go see a doctor if i were you as it is worrisome enough to you that you would ask if you need to see a doctor.  :0)

I suffered for years with heartburn spent a fortune on anti acid tablets etc, eventually went to a Doc and was diagnosed with helicabactor pylori, which is quite common and was cured with a dos of antibiotics..go and see a Doc is my advice, at least it will give you peace of mind.

It could be acid reflux (GERD) as it is also called. Or a hiatel hernia, which backs acid up into your esophagus and feels like burning, excessive burping, food feels like it gets stuck in your throat and you cough (almost choking)and clear your throat a lot after eating. If you wish to just try something to see if it might work for you before going to the doctor, try over the counter Prilosec or (generic) forms of it at most retail pharmacies. It will cut down on the stomach acid from backing up into your throat etc. See how you feel after 2+ weeks, if no improvement/relief go see your doctor or refer to a gastroentoralogist. It could be something more serious that needs to checked out. Good luck.