Just throwing this out there.
If your pre-O temps tend to be lower than average, does it stand to reason that your post-O temps would be lower than average (even if you do get pregnant)?
I was just doing some chart stalking (Naughty girl, I wasn't going to obsess!

) and saw a few pregnancy charts that never got above 98.1 degrees, but they had low pre-O temps like mine. I was just wondering if anyone had any insight.