Will he give me anything at all?

Pregnancy and depression are about to kill me, everything is so terrible, my moodswings have been going strongly horrible for the past month or so, I think I'm on the verge of a breakdown of some type...I'm 5 months pregnant, and I can't eat, and I keep losing weight..crying hysterically..wanting to kill myself. Do you think the doctor will give me any form of antidepressants or help me in anyway..I can't make it through this much longer and my significant other isn't helping me cope at all.