I am having mild pain in left side lower abdomen, don't able understand why it is happening, one year back I consulted with doctor and I went under ultrasound and it was diagnosed that  there is gas ball. After taking medicine it was cured but again the pain started after few days it was gone automatically. But after some time again it is started. The pain is very mild and it doesn't effect my daily routine life still I am concern about it. Please suggest . I am planning to go for LFT n KFT test.