I had unprotected sex during  ( likely ovulation)   I waited about 65 hours to take a plan b.  Then  I had sex again that same day and the following day.  I know it was soo stupid and its been 8 days and I haven't had any  withdrawal bleeding?  Im nervous that I might be pregnant... Has anyone else experienced anything close to this?  Have you taken a plan b, had no withdrawal bleeding and ended up pregnant?