I know you aren't supposed to but..

For those of you that use clearblue digital advanced. Have you tried using those refill fertility monitor test sticks. Instead of buying the clear blue every month? The purple sticks are the clearblue fertility ones. I hear they actually work just the same without having to buy the whole test it again. Plus you get 10 more sticks than you normally would buying the whole test.

So for . For me they work it says low fertility as I should be.. my period ended Monday and since taking supplements have a regular cycle so I tend to get positive opks about 2 weeks after my period ends.