Gastric problem. Of h pylori infection?

Hello Doctors, Good Afternoon. Pls help. Can stomach ulcers cause pain in the lower abdomen either side after passing stool. The consistency of the stool is normal and no blood reported in stool. Also pls let me know the symptoms of H Pylori infection? Asking for my brother. He is a physically active and healthy person age 27 with no history of diabetes and high bp or thyroid. Whenever he does pass stool .while passing there is no pain. But after the stomach is clear he is getting cramps in lower abdomen and also either side of the lower abdomen. There is pain and burning sensation. No decrease of appetite or weight loss reported from him. Also he gets pain just beneath the lungs. It moves here n there.Happening past five days. He also says his bladder and back is hurting. Now are there two separate issues ..Pls pls help.. Does it look like IBS. My Father has IBS. But my Brother passes stool only once a day. Kindly advise