If you are going on clomid I suggest getting a pack of clear blue easy digital OPKs. I kow they are expensive but there is zero guesswork with a smiley face! I used the Internet ones for 2 1/2 years and over 3 separate rounds of clomid with no luck. 2 months before iui my doc recommended the Clear Blues and bam pregnant! I can not say enough good things about them.