I have moments of Stomach pain in what appears to be the top of my stomach, also it is usually accompanied with upper back pain. Also needing to go to the bathroom frequently to pass stool, often times it's almost like constipation and other times it's like diarrhea, and most of the time my stool is black and has what appears to be mucus, I sometimes wake up in the middle of the night with stomach pain and cramps. and i do not know if this is related or unrelated but also i have noticed sometimes when i am urinating a sticky clear substance is in my urine.
i am a 20 year old male, overweight. what could be wrong? it seems to come and go. this has been going on for quite sometime. thanks for any and all advice
also i can feel and see my heart beat through my stomach