Hi I Had Unprotected Intercourse With My Bf In Approximately

Hi I had unprotected intercourse with my bf in approximately middle of my cycle...he didn't ejaculate inside me...we must have had 3 times withing a span of 12hrs...I took a ipill after 24hours of last intercourse... I didn't get any spotting or bleeding after taking ipill and my periods are delayed by 4 days... Does this mean am pregnant... Or is it okay to not bleed after taking ipill?