You can see your logs at a glance in three places: 

 1. In your calendar: The purple dot above the date means you have logged something on this day. Tap or pull up the mini upwards arrow near the mid-bottom of the screen to see everything you have logged on that day. 

2. On the logging screen: select the desired date. The categories in which you have logged something are highlighted with a green checkmark.

3. In the health charts: if you select a date, you can scroll down to the bottom of the screen to see your logged symptoms for that day.