Once upon a time people were worried about things like being tracked via ATM and eftpos use. Well those days are long gone and now Google measures every single footstep you make while you Tweet to the world about how you feel about the whole thing.
If you want to see what Google has on you check out google.com/maps/timeline
It has point point accuracy on locations you’ve visited and routes you’ve taken, even linking images to the locations (if you have geo-tagging switched on for your photos).
You can pause the tracking or if you’re not comfortable with all this information on you then you can click on the trash can in the bottom right of the map to wipe the data
Although like I’ve said before, once something is on the internet, it’s there forever.