I am feeling a pain on left side , like a squeezing sensation, ever since I ate a big meAl , happened last night too after eating supper. I took tums and it went away but today it didn t go away , has been 6 hours, I have n t gone to bathroom ,which i usually do after eating, so am thinking it is that. But sometimes have pain on left side in back also, upper back . So any thoughts, just indigestion, or hear attach, blood pressure is good, 116,73. I take a half of blood pressure pill a day