Were you actually using the contraception properly - eg taking your pill every day, using condoms correctly etc. or did you know you might have an increased risk of contraception failure for some reason.
I have been reading some threads and the numbers of unplanned pregnancies are much higher than I would imagine, so I'm curious really to know how so many come about. My thoughts are that for most of these people still took known risks, but it is hard to tell for sure.