Another BFN

Another BFN! We have been TTC for 15 months. My husbands swimmers are good to go, I've been on clomid for two months so now I'm ovulating regularly. So why isn't it happening? I really don't understand. In the time we have been trying, friends have started trying, had their pregnancies, delivered their babies, and had milestones with their little ones. So wth? When is it our turn 😔