Lower abdominal pain can be due to several causes like appendicitis, urinary tract infection, irritable bowel syndrome, gastroenteritis, kidney stones
etc.Are you also having symptoms like increased urinary frequency, painful urination? If yes then it can be suggestive of a urinary tract infection or kidney stones. Get in contact with a healthcare professional. A clinical examination and work up like urine examination, urine culture and ultrasound abdomen may be helpful.