Ovulation time!

Hello my fellow future mommies! 
​I've been having a little trouble with my husband (two years) lately and I need some opinions! 
​I have recently doubled my dose of Clomid to help me ovulate and trying my best to track my ovulation. 
​HOWEVER, it ALWAYS seems like when  I am ovulating, he is "too tired". 
​????
​I have his full understanding that his job is stressful and he works a lot. I get it! But of course I worry that he isn't ready and he won't tell me. 
​OF course I talk to my husband about it and he apologizes and reassures me that he is ready, is excited, and can't wait.  However, it happened AGAIN this month. 
​Again, I understand he is tired. But he knows I'm having trouble ovulating and he isn't exactly helping the situation if we don't have sex. 
​What is really going on?!