One primary problem in getting pregnant: pinpointing when your most fertile.

Fairhaven Health says its OvaCue Fertility Monitor can identify when ovulation will occur to increase your chances of becoming pregnant.

The fertility monitor predicts ovulation up to seven days in advance, and is 98 percent accurate. It’s not a pee-on-a-stick test, either: The OvaCue uses saliva samples to measure changes in electrolyte concentration. You just place the sensor on your tongue for five seconds each day.

It’s $280 here. (Affiliate link.)