Peak opk cd 21?

K

Today is day 21 of my cycle and I took my first round of Clomid days 3-7... I started taking clear blue advanced opks on day 10 and got 2 low days and then a flashing smiley every day until this morning when I finally got a solid...has anyone else ever ovulated this late with Clomid? I thought it was supposed to shorten your cycle?!