Depression

I need help... I’m 17 & I’m only 1 week & 6 days away from my due date and I feel like she’s never gonna come. I am getting so depressed that it is becoming a big concern... I’ve had a mental illness in the past and I feel like it’s all coming back now. I’ve felt so lonely and hated and unwanted and unloved. The doctor put me back on depression meds that helped for a week or so, but now I’m starting to feel suicidal.. I wanna ask someone for help, but I’m scared they’ll take my baby from me.. what do I do?