What Causes Delayed Periods After Clincin V Insertion Treatment?

Hello doctor. m a female aged 31 got married in may 2010. got infection after a few days of having intercourse (got yellowish pus like discharge and itching). doctor gave me ovules to be inserted into vagina called clincin V (in all 7 for 7 consecutive nights before retiring to bed). after using this, i got rid off the infection. my last period was on 14th June 2010 and till now i have not my periods. i also did a urine test but it was negative. i want to know whether i m pregnant else why the periods are delayed so much?