Not too long ago, I noticed a weird sort of pain near the pelvic area on the right side. I would best describe it as a sort of numb and strain-ish kind of pain, along with inconsistent bowel's ranging from mostly liquid, solid but has empty holes, two different shades of brown on the poop, or solid poop, but looks sort of mushy. Sometimes when I start coughing, it would lead into regurgitation, regardless if I ate or not. Also to note that the pain is usually not always there as it shows up shortly after I wake up, disappears for a few hours, and come back at some point in the afternoon, or I wake up with no pain and it will come around a few hours after I wake up, disappear for some of the day, and then come back.
This isn't the first time as it has happened to me about a year and a half ago and I did see the doctor about it a few times. The doctor diagnosed me with gastritis and gave me Omeprazole, Dicyclomine, Berroca plus, and suggested probiotics, but none of them seem to work. Eating healthy, like veggies and lean meats didn't seem to help it either. Even eating stuff like hot cheetos or soda seem to have no affect to my stomach. I'm not 100% sure, but exercising also seemed to make the problem worse, which is why I'm not exercising right now.

Side note: I once woke up in the middle of the night needing to poop, but held it back and I heard heavy stomach rumbles after that and I'm not sure if that contributed to the inconsistent bowels.