Hello everyone, Im new to all of this but i could do with some advice! I have been using the Unitest LH Ovulations tests for the past 3 cycles and althought they get gradually darker until day 16 (of my regular 31 day cycle) they are yet to go as dark as or darker than the control strip. (which is how the instuctions say to detect the LH surge) On day 17 the test strip then dissapears and I'm then left with just the control strip. Is this something that I should be going to my doctors about or do i just accept the darkest day as my ovulation reading? Has anyone else experienced these results? Thank you.