Hi

I used MB and found that it helped me. It took a few goes to know what my full ferns looked like, but I found it worked. I charted this in conjunction with my cycle to pin point O, so together I had a good idea of when I was actually Ovulating. I also found that you had to get the amount of saliva on the slide right otherwise you wouldn't get a good read. This happened to me for a few days before I realised.

Good luck!
Berry