###Human: Why are there pain in lower stomach with gas and burning sensation during urination? ###Assistant: Hi. Please drink a lot of water for the urinary problem. Take the following medications for the stomach problem. 1. Capsule Esomeprazole 40 mg once daily before breakfast for four weeks. 2. Tablet Mebeverine 135 mg thrice a day before meals for two weeks. 3. Tablet Rifaxamin 550 mg twice a day before meals for two weeks. Avoid spicy food, bakery items, fast food, and caffeine.