Upper gas bloating, keep burping, sometimes pressure of gas makes it hurt when I take a deep breath. Problem developed after rx for Tick Bite, 3 weeks on doxicyclean. wasn t very hungry for a while, got constipated, Able to go now but only in small amount. stool doesn t seem to match with how much I ve have been eating. Bloating sometimes makes it hurt when taking deep breath. Been Using Gas-X and it helps but not totally effective.