Fertility and pregnancy wheel with adjustable ovulation calendar From fertility to delivery, from conception to due-date, the 9 Months Plus Ovulation Calendar & Pregnancy Pinwheel provides day-by-day insight into conceiving a baby and pregnancy. Ideal trying-to-conceive and pregnant women, the ovulation calendar and pregnancy wheel tells you when you are most fertile, when you are most likely to conceive, when take a pregnancy test, and even the expected date of a missed period. Once you conceive, the pregnancy wheel will show you important pregnancy milestones over the next 9 months. Predict Ovulation Know When to Test Learn Your Due Date Track Key Pregnancy Milestones.