What Causes Pulsating Sensation In The Stomach With Loss Of Appetite?

since last week my stomach has been pulsating? especially when it's full or when i lie on my back, i also have been depressed for some time, and dont have much appetite, or any appetite at all. i lost weight except at the abdomen area where fat seems to develop. since this pulsing began i have no appetite whatsoever. but still eat. i also have some kind of discopathy at L5 affecting my physical activity. i don't feel well when play soccer, my right leg hurts and i get lots of side stitches. i ve been to a few doctors and therapists, 1 gave me a shot of depo medrol in the spine, didn't help after a week's rest; others tried manual therapy- no result, pain still in the ischiatic nerve. its getting long, but wanted to share overall condition.
i used to be very active... how can the pulsating disappear? it gives me even more worries. should i see another doctor or just quit my job and take a break? 28 years old male thank you.