My LMP was april 4, then we have the deed las april 21, but no penetration really occurs and he didn't ejaculate. Since it was my ovulation week, I got scared and took nordette 25 hours later then the other 4 12 hours later. Its been 10 days and no withdrawal bleeding yet. I have 28-30 days cycle, and if its right i should have my menstruation this may 4. Is there a chance of regnancy? Thanks!