I AM EXPERIENCING TROUBLE SWALLOWING. THE FOOD SEEMS TO STOP

I AM EXPERIENCING TROUBLE SWALLOWING. THE FOOD SEEMS TO STOP RIGHT IN THE MIDDLE OF MY CHEST. OFTEN I VOMIT. I AM A RELATIVELY HEALTHY 76 YEAR OLD WOMAN. THIS PROBLEM BEGAN ABOUT THREE OR FOUR MONTHS AGO. IT HAPPENS ABOUT ONCE A WEEK. IT IS WITH FOOD ONLY - USUALLY MEAT. IS THIS A COMMON AGING CONDITION......I ALSO TAKE MEDICATIONS FOR ACID REFLUX