### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
i have a pain in my lower left side of stomach from time to time. Thought it was hernia but ct scan did not show anything. every so often I will have a protrusion come out of my side (thus hernia thinking). Multiple Dr s have all stated they could only verify when this is actually happening and it doesn t last that long thankfully but it is extremely painful. Another Dr stated it could be a floating rib that is protruding out. i would like to start exercising but when i do i am always afraid this thing is going to pop back out. First time it happened was over 20 yrs ago and i was slimmer back then so i actually could see the protrusion. it was about the size of a golf ball. Now i have more wait so i can only feel it for the most part. i would like to know what exactly this is and how i can prevent it from occurring any more.

### output:

Hi. Thanks for your query and an elucidated history. You have two different problems. 1. You have a definite hernia and if the opening is large, it will not cause any pain. Consult a General Surgeon and get it operated forever. 2. The sharp pain in the right lower abdomen can be due to the following reasons:Colitis, Salpingitis, Left ovarian cyst with twisting;PID / IBS/ Sigmoid volumes and so on. The only sure way is to get a proper clinical diagnosis by a physical examination conducted by a General Surgeon or a Gastroenterologist. Get investigated:CT scan you have already taken. Blood, urine and stool tests. Diagnostic Laparoscopy if required, this can be therapeutic. If ll the investigations are normal, think about IBS- Irritable Bowel Syn Chat Doctor. Remember that stress if the most important reasons for IBS.