Conceiving after bc

Hey ladies! I'm curious how long, for those who have been successful with conceiving, it took after coming off of birth control. I have been on orthotri cyceln lo and lo estrin fe for just over ten years. I stopped taking my pill September of 2015, started having regular periods in December 2015, we are constantly having sex and still nothing. I am wondering when the point of concern pops up, or if I should wait a couple more months before worrying about fertility issues? Thank you in advance :)