When to start taking ovulation tests?

Sherri • With the help of Glow, now pregnant with my third and final baby! :)
My period ended Sunday with just a little spotting on Monday. And last month I o'd on the 14th. So I'm not sure if it's supposed to come around the same time? Or if Glow will tell me when yo start? I feel really wet for some reason so I took a ovulation test just to see and I have no surge yet, but again, not sure if I'm testing too early. Thanks in Advance!!