I've been having this stomach problem since the last 4 years. I feel these really strong vibrations in my stomach along with pain, and a lot of gas gets formed too. The stomach aches get worse at nights and in the mornings. Could I be having worms? I had noticed a white worm moving in my stool a year or two back and had got a stool test done but nothing was detected. Also I've been passing loose stools lately.