I'm googling unexplained infertility and came across this little gem from sharedjourney.com:
Emotions can play a large role in both female and male infertility. The entire reproductive process is controlled by one organ - the brain. Negative thinking or emotional distress can sometimes interfere with the brain's ability to control this process. In particular, depression has been linked in various studies, including one from Brown University and another from the University of California, San Diego, with decreasing a woman's ability to get pregnant. While experts aren't exactly sure how or to what degree emotions play a role in infertility, an increasing number of infertility clinics are supplementing their treatments with courses that focus on changing the way you think. You might want to think about redecorating your home or office in order to create a more relaxing environment in which to focus on your thoughts and on your body.