I am clinically depressed, and GD certainly didn't help it. My first week after finding out the baby's gender was the worst, and I decided that if I didn't get over it in a week or two I'd see a therapist or other professional about it. For now, I'm mostly better, with occasional moments of quite normal disappointment (knowing me, though, there may be "relapses" at other times, so I'm prepared to find a counselor)
Are you able to see a therapist? It would probably be a good idea for you and the baby both. Anyway, good luck, I mean that sincerely.