Anxiety Support Group
Anxiety is a physical condition marked by intense and persistent feelings of distress, fear, angst or dread. General anxiety caused by routine day-to-day stresses usually passes quickly and is experienced by almost everyone at one time or another. However, such feelings that linger over time and are very difficult to cope with, and which lack a clear cause, may indicate...

Take urself to ur Dr. have Them check it out...
Always Start with the Dr.s.
Do Not EVER Look online OR in Books and TRY to Diagnose Self, Always takes you straight to Worst Case Scenario...Don't Put urself, and Those that Love and Care for You Thru that.
Best of luck!
I guess what freaked me out the most is because my left side is the one that hurts....so of course I get scared!