IMHO, if you are not preventing, you are trying. Technically you might not consider yourself as TTC, but you should feel free to post on the board anyway. If you think you or DH might have fertility problems, then going off birth control might not be considered trying. But, if you believe you guys have no known fertitily issues, it could happen at any time! Most women get knocked up within a year if they don't use protection. Have fun, relax, and enjoy not worrying about condoms. Don't be surprised if you have a hard time relaxing, though. Most women start counting days and testing, it's too hard to ignore. If you ever decide to more seriously TTC, I'm sure the women on here have lots of advice on tracking for you!
I have always said if you are having sex and you are not using birth control then you are TTC. Even if you don't really mean to get pregnant. LOL How ever DH and I did NTNP for a few months before actively TTC.