Physical examination was unremarkable: there was no palpable adenopathy; breath sounds were clear to auscultation bilaterally in all lung fields; there were no appreciable murmurs, rubs, or gallops; there was no organomegaly or tenderness on abdominal examination; there were no appreciable rashes on examination of the skin; and there were no sensory ...
1 Each follicle contains an immature egg (ovum) but only one follicle usually survives to maturity. It is supposed that ovulation pain is caused by the expanding follicle stretching the membrane of the ovary.  Ruptured follicle - when the egg is mature, it bursts from the follicle. This may cause slight bleeding.
Ovulation usually occurs about two weeks after the first day of each menstrual cycle, so the timing of the pain makes mittelschmerz easy to recognize. To help determine if your pain is related to ovulation, your doctor may ask you to chart your menstrual cycles, noting any episodes of pain, as well as the location of the pain (the pain of ovulation usually occurs on one side of your lower abdomen).