I stopped BCP in May and had AF 27 days later ... then had AF again 23 days later. However, we were NTNP for a bit then we really started TTC. I started OPK's this month and I got a positive today on CD 15 - which is late if my cycle truly is approx. 25 days but here's hoping :-)
I would recommend at least testing for ovulation just so you get a feel of when you ovulate. When I stopped the pill I had crazy symptoms for a few months, symptoms similar to PMS (even when I wasn't expecting AF) so I mistakenly thought they were from ovulating ... bloating, pain in the ovary area, etc. Since I wasn't testing, I can't say for sure if I was o'ing.
FX for you - hope you get your BFP