Hi Lola!
Ferning is what the crystal patterns are referred to when you are using a ovulation microscope. A womans saliva contains estrogen prior to ovulation which is visable in a microscope. Check the FAQ index for more info.
Also this is taken from FAQ regarding checking cervix for cm: http://www.in-gender.com/CS/forums/t/3584.aspx
How to retrieve cm….TMI!!! You reach up inside your V and with your finger you touch the cervix. If you can't reach it, bare down like you are pushing out a baby. Then you hook your finger and pull out. The cm on the tip of your finger is the one you want to test. Or insert two fingers and scissor grab near the cervix, checking the cm in between the fingers. The cm closest to your cervix is the most alkaline and the cm on the edges of your v is acidic. Wipe this on the pH strip (or on the digital pH tester wand) and wait for up to 10 minutes (no waiting for digital) depending on how much water is in your cm. If your pH strip doesn’t change and you have tried several times to test pH; this means you have low ionic strength in your cm (which means you NEED a digtal pH tester). Urine pH only tells you how you are doing with your diet and supplements that day- it does not help with swaying besides that.
To test dh pH you have him give a sample in a cup or a condom. Then test that sample with pH strips right away (the longer semen sits out the higher the pH goes and you want to know his initial pH).
*helpful tip: If you can not retrieve cm to test pH in this manner get a instead cup or diva cup. Place it in vj for 30 minute-hour. This will fill up with fresh cm that you can test easily
Checking for a shift in cm is really key to pinpointing ov. 12 hours after ov cm should either be dried up or drasticlly change- ie: from clear stretchy to opaque creamy or dry; or from opaque creamy to dry (not watery). Watery cm still sways boy and is considered fertile.
Just got to keep checking and get familiar with your body.
OPK's let you know when you are getting closer to ov.
CM tell's you when O+12 is.
Temp spikes confirm that you are past Ov and usually past getting pg.
Hope this helps some!