ladies who have used 1st response OPK..

When you used it, did you notice the line become gradually darker the closer to O?
I am on CD 17, and have been using them since day 10, with no line whatsoever. Today, the line is faint, but it's there.
I've noticed a change in my CM (finally) and I have been temping. Just hoping to possibly have a dark line tomorrow. I also have the Digital OPK's which I plan on using tomorrow.
What have you noticed using the 1st response OPK with the lines???? thanks!!!!

Re: ladies who have used 1st response OPK..

I don't use the first response but I always check the lines on the digitals after I take them and I always get a "fade in" effect with the lines getting darker the closer I get to O.

Re: ladies who have used 1st response OPK..

I have used the 1st response OPK's and yes the line will definitely get darker when your getting closer to O'ing. The first day i tested only 1 line, the next day a faint line a few days later the lines were identical and then a day or 2 later the line is very faint again. So if you see a faint line you should be getting your LH surge soon. Keep testing and good luck!!