I've got endometriosis and I'm depressed

me and my husband have been trying for 2 years. I went to the doctor for a annual check up n found out that I wasn't suppose to have my daughter 3 years ago and that I could not ever be pregnant again. this crushed me and my husband both. we wanted one that was ours and I wanted to enjoy my pregnancy this time. with my ex husband it was a bad marriage n a ruff pregnancy. and all my daughter ask me Is when can I have a sister or brother like my friends. im getting depressed and most nights my husband works so I have no comfort until he gets home. I feel as if I failed as a mother n wife. thank you for listening if you have any advise please tell me

~ a emotional wreck