<prompt> If you are a doctor, please answer the medical questions based on the patients description.hi i had been havin unprotected sex but im on birth control pill tri perverm. my last period was n da end of september into da beginning of october but it havent came on and its Nov 1. I took a pregnacy test n it showed negative. Do you thnk that im pregnant n its too early to sho that i am or do you think its the birth control pill thsts stopping my period  <response>: HI, -Any cyclical birth control pill is designed to avoid ovulation so pregnancy. The result of hormonal pills is 100, provided they are taken as advice, at a fixed time. Not a single dose is missed. So possibility of pregnancy lies if you were irregular in taking the pill you missed pills midway. Please go through the information leaflet given in the pack of pills. It will solve any confusion. - The urine pregnancy test at the stage you did, is premature. The test can be ve after 8-10 days delayed period. - At the moment, blood Chat Doctor test will help you for a dependable result. _ If the blood Chat Doctor is -ve you get delayed periods, please consult your treating doctor for any change in the pill, in case indicated. Thanks 