When your iPhone updates to iOS 9 in the fall, you'll be able to track your reproductive health -- including how often you have sex and whether or not you used protection. As part of its upcoming iOS 9 release, Apple will launch a new set of HealthKit features that will let you log information about menstrual cycles and specific physical changes, such as basal body temperature, cervical mucus quality, and spotting. There will also be a way for people to track sexual activity in the pre-installed app. You can even input ovulation test results. Apple keeps that data private...