Girls, it's been 11 days since CS, and from yesterday I started feelin…

Girls, it's been 11 days since CS, and from yesterday I started feeling pain in my left side. At first, it was just dull aching pains, then they would subside, but now it's constant pain, and if I need to stand up, lie down or sit, it gets even worse. Has anyone experienced this? I don't know what to do, should I call an ambulance or something... My strength is gone.