Ovulating late

Shaday • I am 25 years old and I am happily married. We are ttc, although I am over weight and have low hormones I am trying to change for the better.
I've done 3 cycles of clomid my doctor has me checking ovulation 2 weeks after af and going in on cycle day 22 to check for pregnancy and ovulation but I'm noticing I'm not even ovulating until cycle day 19. Has anyone else experienced and do you know what the doctor will do to help keep track??