I have been without any BC of any kind since my wedding day, in May of 2002. In August of 2002, I got a BFP which unfortunatley was ectopic. We held off actively trying because after that loss, and life in general, we weren't ready to actively try, however, we made no effort to prevent either.
In Feb of 2007 was my second BFP, which resulted in a miscarriage.
As of October of 2007, we started officially trying. Charting, OPK, etc...