Pregnancy Risk After Using Cling Wrap as Condom

Question
age: 17
children: 0
first day of last menstrual period: january 14 2006

today, the 25th of january, me and my gf had sexual intercourse. we used clingwrap since we didn't have condoms. when i took it out i found it didn't break. is there a possibility that she can fall pregnant? it's her 12th day today and we are not sure how long is her cycle but i believe it's more than 28 days a month.

Answer
If your girlfriend has a 28 day cycle (from the first day of her period until the first day of her next period, she probably ovulates on cycle day #14 and can conceive if she has sex on cycle day #13,14,15, or 16. Since you are not aware of exactly how many days are in her cycle, it is possible that she may ovulate earlier or later than cycle day #14. Condoms are only 85% effective in preventing pregnancy. "Clingwrap" is infinitely less effective than condoms, whether it remains intact or not. Sometimes, semen can seep around the edges of any barrier method. Therefore, there is always a possibility that she became pregnant. She is due for her next period on February 10. If she does not get her next period by February 17, I would suggest that she take a pregnancy test. By tnen it will be accurate.