Depression/baby fever

Has anyone ever been depressed from having baby fever and your spouse not being ready for a baby? My depression has slowly been creeping up and is at al all time high right now. All I think about is pregnancy and having a baby. What I’m wondering is: will be depression stay even after I become pregnant and have a baby because of this chemical imbalance in my brain OR has anyone’s depression completely disappeared after they got what they’ve been waiting for...? Just wondering if this is a legitimate excuse to be depressed or if I’m being dramatic 😞