Stomach tightness, heavy, achy for months, sometimes feel sick, no hpylori, no IBS tabs work, sometimes burning feeling in stomach?

Acid. Your symptoms may be due to stomach acid issues including gastritis or ulcer. You can try short term treatment with a PPI like omeprozole 20 mg ( once a day 30 minutes before food). If you do not see improvement within a week see your MD for evaluation.