Why do i keep feeling rumbling noises in my lower abdomen,is that normal? i also keep getting cramps, on the sides and middle of abdomen?

The sounds are peristaltic contractions of the intestines moving substances downwards. However, since you're experiencing cramping these are more than just physiologic& signify inflammation of the intestinal tract from food intolerance, toxic reaction from medication or other substances,possible infection or even some degree of obstruction in the intestinal tract from constipation. See MD as neede