For The Last 10 Days Or So I Have Been

For the last 10 days or so I have been having heartburn, indigestion, and diarrea about 15 minutes after I eat anything. My stomach feels full even when I haven't eaten. Also, I have had a dull stomach ache for the last 3 days. I have been extremely tired even after doing nothing but walking to meet my daughter at her school bus, which is only a five minute walk. Could this be gallbladder problems?