What causes stomach pains and bleeding?  Inflammation.  Why didn't your doctor find out what's wrong?  Inflammation are caused by toxins.  Eliminate toxins and inflammation will go away.  Try diet and juicing for 6 weeks.  If you're better than you stay on the diet.  If you're not better than Chinese medicine will.

Long term inflammation has damaged your body's ability to eliminate toxins. 

https://rumble.com/v140hzc-what-diet-foods-and-supplements-cures-stomach-pain-and-bleeding.html