Does Delayed Period After Intercourse While Having PCOD Indicate Pregnancy?

im having PCO prob. My periods were irregular only. but it was regular only for the past three months.im trying to get conceived. but im living separately as he is out of station for past 2months. he comes to meet me every week.last month we had intercourse on 18th day from my periods. Now my periods is late for 8 days.am i pregnant now?i don feel like eating for the past two days and having severe headache also while get up in morning. Pls reply me