It is possible to be pregnant even if you have PCOD (Polycystic Ovary Syndrome) and irregular periods. However, a negative pregnancy test result on the 35th day does not necessarily rule out pregnancy completely. It is recommended to wait for a few more days and retest for accurate results. If your period does not arrive within a week or if you continue to experience pregnancy symptoms, it is advisable to consult a healthcare professional for further evaluation and guidance. They may suggest additional tests or examinations to determine your pregnancy status accurately.