Health app and fitness app no longer working after 17.6.1 update

After installing the latest software update, 17.6.1, my iPhone no longer responds to input for the health app and the fitness app. My iWatch still reminds me of taking my prescription medications at the correct times. It also appears that all my fitness records have been wiped clean off my iPhone. My iWatch is software version 10.6.1, which as of today is the latest version. Help!!