In all honesty, I would count from the time you stopped taking birth control. The fact that you're not menstruating could be an issue all in itself. So you practically have 4 months under your belt already. The magic number is 12. Insurance companies like to make you wait 12 months before they pay for anything else. I have some "normal" friends that ranged from getting pregnant right away to taking 7 months of active charting and trying. I think six months is average when you have no infertility issues.