Has anyone used a microscope to see their saliva ferning when they ovulate? Has anyone used this method during fertility awareness for birth control? I'm on the combined pill at the moment but thinking of going on cerazette. I see ferning all the time now (probably due to taking the combined pill). Am I right in thinking that estrogen is free to do what it wants on the mini pill, therefore allowing ferning to appear and disappear seeing as ovulation is controlled by estrogen? This is just a curiosity of mine now that I got a mini microscope today and want to become more aware of my cycles and what's going on :)