Ok ladies I need some help here!

Mr

This is my first month using an OPK kit and I’m having a hard time deciphering what days are positive for me. If there is a line drawn that means i tested more than once that day. Looking at this i was certain my peak was the third or fourth line from the top but as i continue to test it still looks just about the same color as the control but not darker. Any advice would be greatly appreciated!!!