Two Weeks Ago I Was Walking To My Room And

Two weeks ago I was walking to my room and my stomach began to feel sick. With each hour it got worse and worse. No nausea or vomiting. It just began churning and making gurgling noises.At about 11pm I had to run to the bathroom. My bowel movement was fluid like brown water. I had to go to the bathroom every 30 to 40min. 2weeks later and my stomach is still churning. My stools are no longer runny but soft and as soon as I eat, my food is immediately digested and I have to go to the restroom. The only thing I remember odd the first day that it happened was eating shelled Walnuts.