I would like to address the issue of depression.
I too, suffer from clinical depression, and have been under treatment for it for about 4 years now.
Often pregnancy and the hormones that go with it, and the changes in hormones and the sleep cycle once the baby is born worsens depression. It did so with me. With my last child I scared my husband horribly one day when the baby was crying and I just couldn't take it. I put the baby in his crib, locked myself in the washroom, called my husband on my cell phone and had a complete breakdown. I cried hysterically for 3 hours, unable to stop. Luckily I had someone to call on to come assist me. He came and took Seth out of the house so I could rest.
I was just starting treatment for my depression when this happened and it was this bad. I worry that for you being young, your hormones are still in flux, and could worsen this type of depression even worse. For this reason I would suggest waiting until you are older to try again.
Also, definitely work with your OB and your psychiatrist or Dr. when attempting to get pregnant so that your symptoms of depression can be kept under control. Remember that clinical depression is only partially about feelings, the rest is physical. And a baby is very stressful, and stress can also worsen depression.