I finished my period on april 11th 2012 and just had intercourse today april 15th 20112.. is there any chance of conception? he ejaculated, ans no sperm came back out even when i peed and pushed...

Let's : Let's assume your period started 4/7 and ended 4/11, that would mean you ovulated the previous month around march 25 and will ovulate this month around 4/21, therefore your most fertile time is about 4/19-23. All this said, there is a chancce you could have conceived since these dates are approximate, however if they are correct then it is likely you did not. Take an early prediction pregnancy test next week, otherwise wait for your normal period to come, and if late, test then. Good luck.