Dizzy In theory yes, you just have to do the ferning test once a day but I probably did it about twice a day just to see if there were any changes! The only tricky thing is timing it with eating, as you need to have not eaten or drunk anything except water for 2 hours before, otherwise your saliva could be contaminated with it. I did get some random partial ferning at other times of the month but when it was full-on patterns like the pic I posted, it tallied up with opks pretty well. Certainly better than doing nothing, but still listen to what temps and cm signs etc are telling you.
Crossing my fingers eskimo that your CD21 tests show you've ovulated and maybe that you're growing a baby in there ! You know the clomid has worked once though, so even if this time it didn't it doesn't mean it won't again, and then it'll just be a case of making sure those sperm are there at the right time.
DizzyN sorry about the parking ticket. DH got a first ever speeding ticket last Sunday afternoon doing 79 on a dual carriageway on the way back from a shopping trip to Mothercare I'd made him take me on, and we hadn't even bought anything. So annoying!
DizzyM How are you doing? Oops about the thermometer!
kirj Has AF cleared off yet? Good luck for this next cycle 
Big waves & pompom shaking to everyone else!