I've just finishing up my first real AF after the m/c. I've never had regular periods, ever, and this is my first time really paying attention to it, so I have no idea what my "normal" is. I was on bcp before I got pregnant, so I hadn't had a "natural" period in almost a year until now.
After my m/c, my levels hit zero about on CD15, and I ovulated on CD34.
I haven't the slightest idea when to start with the OPKs, or mucinex and grapefruit juice! I was thinking around CD 12, but I could be doing it for more than a week (or two!) with no results and it will probably make me a bit crazier than normal. I have 23 IC OPKs left.
So... any recommendations?

Would it be any less effective if I'm drinking the grapefruit juice for two weeks?