BD Basal Digital Thermometer
Natural ovulation monitor
In addition to (or instead of) ovulation test strips that measure hormone levels in urine, fertility professionals recommend that women keep track of their basal body temperature (BBT), which spikes following ovulation. If charted daily over multiple cycles, it can help to predict your fertile window. The BD Basal Digital Thermometer has a large, lighted display that makes it easy to read in the dark, and it conveniently stores your last temperature taken for future recording. That said, the product is not recommended for women with erratic sleep patterns, as they can affect results. In addition, the thermometer beeps to let you know that you are using it correctly, which some users find annoying.