Hi, On March 13 I Had A Sex With My

Hi,
On march 13 i had a sex with my bf..he had 60 percent doubting that he ejaculated sperm into vagina but anyhow i took postpone 72 immediately after 1hr and i felt severe stomach pain at 3 o clock on First day..also i am frequently eating papaya too..My usual cycle date is 28 of every Month and its 4 day cycle..please be advice whether i need to take another postpone pill before 72 hours or not.currently its around 24 hours already.Also let me know what are all the possibility to getting pregnant after taking this pill once..i m confused and feeling down.also i cant go to any gynecologist as of now as m staying with parents.. please advise