Depression during pregnancy

I'm writing this anonymously so please be kind. I am in need of support not negativity. Also I apologize for it being so long.

So here it is. ...

I'm 27, married with kids (3 but 1 died, 1 lives with his dad and I'm unable to see and 1 that lives with me and my husband - also its our kid together) & I'm 3 months pregnant with #4. Though the timing of this pregnancy is horrible we are taking it as it comes. I work full time (my husband has been unemployed for 4 years due to a criminal background) & go to school at night. Our daughter together is 5 & is starting kindergarten in august. We are having to move in with his dad since my income can no longer support us since apartments in my area are expensive.

Anyway I had a normal childhood until I was 13 and my grandma died, since then I've been suffering severe depression. Though I was personally diagnosed I never received professional treatment. My mom refused me all treatment saying it would just go away. Well it hasn't.

I'm now 3 months pregnant and my depression feels worse than ever. In the state I reside in seeking treatment is equal to signing my parental rights away and locking me up forever.

To make matters worse I have no support other than my husband. No friends and my only family is my mom who could careless about me.

Is anyone else suffering in silence?