Depression with TTC

My husband and I have been TTC for over 6 years. I have POS and I went on Clomid and still nothing. We took a year and a half break. Just going with the flow and nothing. As the years go on I get worse with my depression. I feel like I will never be a mother. I have a stepson but it's not the same. Does anyone else have the problem? How do you cope with it? It's really starting to eat away at me.