Having a hard time get through finals week

With the end of the year approaching, knowing we are a few weeks shy of a new year-I can’t help but be severely depressed. Wanting nothing more but to be a mother, haunts me. 2018 will be three years of trying. There is not a known reason as to why we can’t conceive. We have been through plenty of failed fertility treatments. I have been seeing so many pregnancy announcements not only on here, but social media, etc. I am happy for everyone who is able to experience the joy. I am just sad for me. I have two large essays due by tomorrow night as well as two finals. I have lost the motivation to do them. I am starting to feel like my happiness relies on being a mother. Which I know, is wrong.