Neat cervical change post. *Warning has PICTURES in link!*
I use ovuview to track my mensuration cycle and one of the things you can keep notes on is your cervical mucus. Currently I am using this app to avoid pregnancy. 
I got pregnant with it(and temp taking and pre-seed) So I knew it worked for me. Anyways, Even though the app explains the stages of cervical mucus I couldn't understand which I needed to mark. So I googled (my bff). And came across this fantastic, and eyeful I warn you, post. Hope it helps another lady.
http://www.beautifulcervix.com/cervix-photo-galleries/photos-of-cervix/
I got pregnant with it(and temp taking and pre-seed) So I knew it worked for me. Anyways, Even though the app explains the stages of cervical mucus I couldn't understand which I needed to mark. So I googled (my bff). And came across this fantastic, and eyeful I warn you, post. Hope it helps another lady. http://www.beautifulcervix.com/cervix-photo-galleries/photos-of-cervix/