 [ Symptoms ] i have been having a pain in my chest it comes and goes should i be concerned  i have had the pain off and on for a few hours it feels like a stabbing pain that last a few minuets then goes away what could cause this [ Disease ] many insurers have offered considerably lower rates to doctors and hospitals participating in plans sold through the exchanges to keep costs down this has resulted in many of the plans having networks that are more limited than those sold outside of the government run exchanges