Opk help

Kimberly • Married 9/21/12 💍Mama to baby B 5/27/16👶🏼 Baby #2 due January 2019
Merry Christmas to all those celebrating today!! 
Hunby and I have been TTC for a year and a half now. I had crazy irregular cycles until recently. I am now taking bbt and opks daily. 
Yesterday's opk test line was slightly darker than the control line. Does that mean a positive? Hubby and I bd last night so hopefully that was a positive (unfortunately I didn't take a picture). This mornings line was slightly lighter than the control line. What do you ladies think??