I have been on Ortho Evra for almost three years now. I was suppose to have my period March 21st to the 23rd, but because my fiancee was visiting from the marines I "skipped" my period by changing patch days. I took the patch off the normal Sunday and started it again the following Wednesday morning. My fiancee and I had unprotected sex with the patch the 21st through the 26th, could my switching the patch day effected my chances of becoming pregnant? I did get my period April 11th & May 9th, but I'm still not sure.