Pressure and Stress while TTC?

I am new to this whole TTC life and I am finding it's adding stress to my relationship. I feel pressure to have sex on certain days because I'm fertile but it's just not working out as planned because of work. It's causing us to fight. Its making me feel emotional. I am just getting started and I already feel like a faliure. I worry that all this TTC stuff is taking the romance out my marriage. But at the same time I want my husband to know when im ovulating so we can get to it! It just seems to take all the fun out of it.
Advice? Thoughts?