Opk test

Briky <3 • I`m 25 and my husband is 33. We got married on April 30, 2015. We had our first child, Abigail on August 28, 2016!!
So this is the first one I have ever taken this picture was taken 4 min after the test and it said if test line is not equal or darker you are not surging. So if that's the case why did I get a pretty good line? Anyone know what my test means?! Thanks!