Left side pain :(

Michelle
Just got back from a friend's baby shower and my left side is hurting so bad. Feels like pulling/soreness and hurts make certain movements like bend to take off my shoes or anything.
Is that normal? I'm so paranoid and I know that the pulling sensation is a usual thing, but this feels different :( Please help.
Currently laying down with a heat back on my side to hopefully alleviate the pain