For a about a week, I've had a mild sharp pain which started in the left side of my abdomen and worked its way around the whole stomach area. In the morning the pain is barely there and throughout the day it gets worst. Even at its worst I would say the pain is around a 3-4 out of 10 so its not really affecting my daily routines. 

I am a 24 year old healthy male and I've been to the doctors several times for this and they don't know whats wrong with me. They did blood work and checked for STD's, liver, pancreas, thyroid, white blood cells etc and everything was normal. 

I am also using the restroom fine as well, no constipation or anything weird. Basically everything is fine with me except for that pain. What do you think it can be? Thanks