ALSO remember..
Pregnancy is not instant.
The nite you have sex, you are not pregnant. Pregnancy takes up to 2 weeks to fully 'occur'.
First you have to ovulate, THEN conception has to happen. Conception can take 2-3 days.. THEN there is implantation, which takes at least 7 days...
So you see, pregnancy is not instant.
By ONLY Missing one pill, you are not setting yourself up for ovulation