Hey-This is my first round of Clomid 100mg as well.. I am using the NEW dollar tree ovulation tests as well! I like the old ones better, these ones are so light for some reason, and said you can get a darker more positive line in 10 mins rather than 5..
I ovulated on 50mg of CLOMID last cycle on cycle day 18 (positive opk)
I am now on cd 19 and still no + on my OPK.. having the same problem as you..