What could be wrong with me?

Around two months ago all of a sudden I had abdominal pain and severe cramps with a little constipation and passed mucus only/mucus with stool. The next couple of days my physician diagnosed me with enteritis and said it could be bacterial/virus. I then did a stool culture which came back negative.

Fast forward a month, the only symptom that remained was cramping with a lot of gas. I added some beano to my diet and a few days later I felt much better. My physician said it could have been a virus.

Then, two weeks later the same symptoms appeared again, however this time it was not as prominnent. I went to the hospital and they discovered through ultrasound I had slightly increased echogenicity of the liver and a slightly enlarged spleen with possible accessory spleen. Tomorow I am getting some blood work.
Does anyone have any idea with what I could have?
Thanks a lot for reading.