I'm 19 and iv been having a really bad pain on the left lower side of my belly and it kills me the pain goes all through my lower back can you help me?

Left lower abdominal. Left lower abdominal discomfort,especially with tenderness could indicate diverticulitis,inflammatory bowel disease,kidney stones, or ovarian problems. Since your discomfort is severe you should be examined by a physician tonight and appropriate tests will be ordered.