It has been about 5 months since I've been of BC pills (since March). 

The March cycle I just wanted to see if I started ovulating again and wasn't trying to get pg, the closest we had sex was 7 days before ovulation.

April ~ BD 3 days before ovulation

May ~ BD 7 days before ovulation

June ~ BD 5 days before ovulation

July ~ BD 3 days before ovulation

Aug ~ BD 2 days before ovulation

I feel like the only cycle I timed it in the 3 most fertile days (with a good chance) was August.  So I don't know whether to tell people I've been trying to conceive for 6 months, for 1 month, for 5 months, for 3 months, or what.

What would be considered "trying"?

 I consider TTC when you are concentrating on TTC. ;)

 To me, if you're having sex to get pregnant, your TTC

I think that if you are having sex within the 5-7 day before ovulation window (where it is a longshot, but still possible to get pg) then you are ttc. If you aren't NOT ttc, then therefore, you ARE ttc

I think that if you are off the BCP and trying to get pregnant from April than you are definitely TTC from April.

i think you know you are ttc when af comes, and you feel down.

 U want to get pregnant all this time? Then U are TTC. And I think we have  2 most fertile days in every month not 3.