Good luck! Unless you're such an avid athlete that you've stopped menstruating, your cycling shouldn't affect your ability to get pregnant at all.

The advice against overheating, and taking a multivitamin with folic acid is good. Ideally, you take that vitamin with folic acid for 2 months prior, and for the first month of the pregnancy. It's been shown to reduce by 70% the incidence of open neural tube defect, a defect of the brain and spine that occur very early in pregnancy.

Have fun, both on the bike and off! L.