Has anyone else used equate opk with the seven test....I had one test to not work at all and for the test line on the…

Has anyone else used equate opk with the seven test....I had one test to not work at all and for the test line on the other six out of all of them I barely if at all saw any type of line....so my question is do u think I'm just not near ovulation or could I have just missed my surge...anyway I have bd for the last pass to nights since all of my apps said that I would be ovulate on the 15th, 16th and some even say the 17th so I'm going to bd tonight and on the 18th as well...