Take a lactobacillus preparation, plenty of fluids and light diet and see.
Pain and discomfort
on the
lower left side of abdomen just below the ribs and to the left of navel can be due to several causes such as Crohn’s disease, colitis, diverticulitis, infection in kidney, kidney stones, adhesions, polycystic ovary in females, IBS, constipation, and an abscess in rectus abdominis muscle or psoas muscle. Since you do not have a lump or a tender hot spot, in all probability it is not a muscle.