Hi, am a 34 years female. for last 2 years, i often feel severe cramp at my left lower abdomen, when it happened, i felt a lump present deeply at that area, the lump and pain relieved immediately if i press hard at that area with fingers, and same time there is kind of a sound went off. This may occur about two times in a month for last two years, and otherwise am ok with normal diet and bowel habit.