Suggest Treatment For Septate Uterus

please i want ur help.im 23 years old.i had one misscarraige.i have septate uterus and did a sergery (hysteroscopy and laporoscopy)and it was removed.my menstrual cycle is delayed for 7 days.can u tell me why?i did my surgery on 5-2-2010 and my last menstrual cycle was on 19-1-2010.it is delayed now.why